I think it's more like everybody got the same idea and shit. There's the Borderlands looking one too and another and stuff.
Watched some Paladins streams yesterday, looked like shit tbh. Didn't look like good FPS at all, the projectiles looked weird and it was hard to tell if you hit anything, movement felt slow, the map(not sure if there's more than one, I only saw one I think) was very open ended and very basic, I don't know, it felt pretty meh. There's also some weird ass RNG aspect where you get cards when you level up and they seem to be random within a specific pool and if you get certain ones it's better and they're kinda like talents. Oh and yeah, there's levels so the FPS aspect is limited by RPG elements.
I don't know, definitely didn't look good at all. The Borderlands one looked pretty alright from what I've seen of it. There's another too with a weird color scheme on everything iirc but I forgot the name or who makes it. Everyone's trying to get into the FPS stuff with them CSGO numbers I assume.