Reminds me of this music video by bonobo https://youtu.be/ebzEEEdjHj0?si=AkBjTe3O_wBPQCcH

Google photos has a collage mode, you select up to 6 pics then the add to(plus icon) and create collage. there's basics squares and like 20ish colourful templates as well

Yeh that's a cake, someone made it impressively fast. twitter video