diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1fa369e821..3bc0d0aec4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -23,10 +23,15 @@ should change the heading of the (upcoming) version to include a major version b
 - Added `getChakra` to package exports
 - Restored the `ui:options` customization
 
+## @rjsf/core
+
+- Updated `LayoutGridField` to use the pre-existing `UI_GLOBAL_OPTIONS_KEY` instead of its own incorrect one.
+
 ## @rjsf/util
 
 - Fixed form data propagation with `patternProperties` [#4617](https://github.com/rjsf-team/react-jsonschema-form/pull/4617)
 - Fixed issue where oneOf schema references could not be modified when defaults were set, fixing [#4580](https://github.com/rjsf-team/react-jsonschema-form/issues/4580).
+- Updated the `GlobalUISchemaOptions` types to extend `GenericObjectType` to support user-defined values for their extensions
 
 ## Dev / docs / playground
 
diff --git a/packages/core/src/components/fields/LayoutGridField.tsx b/packages/core/src/components/fields/LayoutGridField.tsx
index 8d16618f9f..48776fc0dc 100644
--- a/packages/core/src/components/fields/LayoutGridField.tsx
+++ b/packages/core/src/components/fields/LayoutGridField.tsx
@@ -22,6 +22,7 @@ import {
   SchemaUtilsType,
   StrictRJSFSchema,
   UI_OPTIONS_KEY,
+  UI_GLOBAL_OPTIONS_KEY,
   UiSchema,
 } from '@rjsf/utils';
 import cloneDeep from 'lodash/cloneDeep';
@@ -101,10 +102,6 @@ export const LAYOUT_GRID_UI_OPTION = 'layoutGrid';
  */
 export const LAYOUT_GRID_OPTION = `ui:${LAYOUT_GRID_UI_OPTION}`;
 
-/** The constant representing the global UI Options object potentially contained within the `uiSchema`
- */
-export const UI_GLOBAL_OPTIONS = 'ui:global_options';
-
 /** Type used to return options list and whether it has a discriminator */
 type OneOfOptionsInfoType<S extends StrictRJSFSchema = RJSFSchema> = { options: S[]; hasDiscriminator: boolean };
 
@@ -386,7 +383,7 @@ export default class LayoutGridField<
     schemaReadonly?: boolean,
     forceReadonly?: boolean,
   ) {
-    const globalUiOptions = get(uiSchema, [UI_GLOBAL_OPTIONS], {});
+    const globalUiOptions = get(uiSchema, [UI_GLOBAL_OPTIONS_KEY], {});
     const localUiSchema = get(uiSchema, field);
     const localUiOptions = { ...get(localUiSchema, [UI_OPTIONS_KEY], {}), ...uiProps, ...globalUiOptions };
     const fieldUiSchema = { ...localUiSchema };
@@ -395,7 +392,7 @@ export default class LayoutGridField<
     }
     if (!isEmpty(globalUiOptions)) {
       // pass the global uiOptions down to the field uiSchema so that they can be applied to all nested fields
-      set(fieldUiSchema, [UI_GLOBAL_OPTIONS], globalUiOptions);
+      set(fieldUiSchema, [UI_GLOBAL_OPTIONS_KEY], globalUiOptions);
     }
     let { readonly: uiReadonly } = getUiOptions<T, S, F>(fieldUiSchema);
     if (forceReadonly === true || (isUndefined(uiReadonly) && schemaReadonly === true)) {
diff --git a/packages/core/test/LayoutGridField.test.tsx b/packages/core/test/LayoutGridField.test.tsx
index 4cb1213b7d..377cd6476e 100644
--- a/packages/core/test/LayoutGridField.test.tsx
+++ b/packages/core/test/LayoutGridField.test.tsx
@@ -17,6 +17,7 @@ import {
   sortedJSONStringify,
   toIdSchema,
   UI_OPTIONS_KEY,
+  UI_GLOBAL_OPTIONS_KEY,
   UiSchema,
 } from '@rjsf/utils';
 import validator from '@rjsf/validator-ajv8';
@@ -29,7 +30,6 @@ import LayoutGridField, {
   LAYOUT_GRID_OPTION,
   LayoutGridFieldProps,
   Operators,
-  UI_GLOBAL_OPTIONS,
 } from '../src/components/fields/LayoutGridField';
 import { SAMPLE_SCHEMA, sampleUISchema, SIMPLE_ONEOF, SIMPLE_ONEOF_OPTIONS } from './testData/layoutData';
 import getTestRegistry from './testData/getTestRegistry';
@@ -590,7 +590,7 @@ function FakeSchemaField({ 'data-testid': testId, ...props }: Readonly<FieldProp
   const { idSchema, formData, onChange, onBlur, onFocus, uiSchema } = props;
   const { [ID_KEY]: id } = idSchema;
   // Special test case that will pass an error schema into on change to allow coverage
-  const error = has(uiSchema, UI_GLOBAL_OPTIONS) ? EXTRA_ERROR : undefined;
+  const error = has(uiSchema, UI_GLOBAL_OPTIONS_KEY) ? EXTRA_ERROR : undefined;
   const onTextChange = ({ target: { value: val } }: ChangeEvent<HTMLInputElement>) => {
     onChange(val, error, id);
   };
@@ -693,7 +693,7 @@ function getExpectedPropsForField(
   const idSchema = get(props.idSchema, field)!;
   const formData = get(props.formData, field);
   // Also extract any global props
-  const global = get(props.uiSchema, [UI_GLOBAL_OPTIONS]);
+  const global = get(props.uiSchema, [UI_GLOBAL_OPTIONS_KEY]);
   const fieldUISchema = get(props.uiSchema, field);
   const { readonly: uiReadonly } = getUiOptions(fieldUISchema);
   // The expected props are the FORWARDED_PROPS, the field name, sub-schema, sub-uiSchema and sub-idSchema
@@ -709,7 +709,7 @@ function getExpectedPropsForField(
     uiSchema: {
       ...uiSchema,
       [UI_OPTIONS_KEY]: { ...global, ...otherUiProps }, // spread the global and other ui keys into the ui:options
-      ...(global ? { [UI_GLOBAL_OPTIONS]: global } : {}), // ensure the globals are maintained
+      ...(global ? { [UI_GLOBAL_OPTIONS_KEY]: global } : {}), // ensure the globals are maintained
     },
     idSchema,
     errorSchema,
@@ -1208,12 +1208,12 @@ describe('LayoutGridField', () => {
     test('field with uiProps and uiSchema with global options for the field', () => {
       const uiProps = { fullWidth: true };
       const globalOptions = { label: false };
-      const uiSchema = { foo: { 'ui:widget': 'bar' }, [UI_GLOBAL_OPTIONS]: globalOptions };
+      const uiSchema = { foo: { 'ui:widget': 'bar' }, [UI_GLOBAL_OPTIONS_KEY]: globalOptions };
       expect(LayoutGridField.computeFieldUiSchema('foo', uiProps, uiSchema)).toEqual({
         fieldUiSchema: {
           ...uiSchema.foo,
           [UI_OPTIONS_KEY]: { ...uiProps, ...globalOptions },
-          [UI_GLOBAL_OPTIONS]: globalOptions,
+          [UI_GLOBAL_OPTIONS_KEY]: globalOptions,
         },
         uiReadonly: undefined,
       });
@@ -1386,7 +1386,7 @@ describe('LayoutGridField', () => {
     const otherUIProps = { inline: true };
     const props = getProps({
       schema: GRID_FORM_SCHEMA,
-      uiSchema: { ...gridFormUISchema, [UI_GLOBAL_OPTIONS]: globalUiOptions },
+      uiSchema: { ...gridFormUISchema, [UI_GLOBAL_OPTIONS_KEY]: globalUiOptions },
       formData: {},
       errorSchema: { employment: {} },
       // IdSchema is weirdly recursive and it's easier to just ignore the error
@@ -1513,7 +1513,7 @@ describe('LayoutGridField', () => {
     const gridProps = { operator: Operators.NONE, field: fieldName, value: null };
     const props = getProps({
       schema: SAMPLE_SCHEMA,
-      uiSchema: { ...sampleUISchema, [UI_GLOBAL_OPTIONS]: { always: 'there' } },
+      uiSchema: { ...sampleUISchema, [UI_GLOBAL_OPTIONS_KEY]: { always: 'there' } },
       formData: { [fieldName]: 'foo' },
       layoutGridSchema: { [GridType.CONDITION]: { ...gridProps, children: GRID_CHILDREN } },
       registry: sampleSchemaRegistry,
diff --git a/packages/utils/src/types.ts b/packages/utils/src/types.ts
index d292f3e378..f494dca54c 100644
--- a/packages/utils/src/types.ts
+++ b/packages/utils/src/types.ts
@@ -370,9 +370,10 @@ export type TemplatesType<T = any, S extends StrictRJSFSchema = RJSFSchema, F ex
 };
 
 /** The set of UiSchema options that can be set globally and used as fallbacks at an individual template, field or
- * widget level when no field-level value of the option is provided.
+ * widget level when no field-level value of the option is provided. Extends GenericObjectType to support allowing users
+ * to provide any value they need for their customizations.
  */
-export type GlobalUISchemaOptions = {
+export type GlobalUISchemaOptions = GenericObjectType & {
   /** Flag, if set to `false`, new items cannot be added to array fields, unless overridden (defaults to true) */
   addable?: boolean;
   /** Flag, if set to `true`, array items can be copied (defaults to false) */