More models interact each others in a single generated image

[DreamFilmVFX]

i'd like to make interact two or more models in one single image, a pratical example of what i'm looking for: i've made some custom trained models of myself and my friends and I wish to generate an image with us in a rock band flyer, or in a movie poster. since now, i've been able to generate this kind of pictures, using reactor for swap multiple faces, but the result it's soo fake. if i can use their models instead, will be great. PS: As far i know, there is a way to use multiple LORAs, but at this moment i've not been able to make a Lora that has a perfect likeness of my custom subject. but i've obtained this with full checkpoints models instead.