"Tertiary" buttons.

[IllagerCaptain]

Tertiary Buttons^{[unofficial name]}, were added to the client as the color used for the "Add to Server" buttons on bots with Premium App Subscriptions, however, this button is not usable as a component.

Example of this in use:

You have 3 buttons, the first one is important so you set it as Primary, and the 3rd one is not as important so you set it as Secondary. However, the 2nd one is more important than the 3rd, but less than the 1st, so what would you do? Instead of having the 3rd one as Secondary, have it as Tertiary, and the 2nd one as Secondary instead.

[devsnek]

that looks like a secondary button to me?

[AlmostSuspense]

The "add to server" button shown here is #303033 while secondary buttons bots can send are #4F545C (it is easier to spot the difference when they're next to each other). This looks like an oversight and imo doesn't need to be its own component style