There are many terms for it. Alternative is one of them but genres like “nu-metal”, “rap rock” and “funk metal” are how we describe them. “Loud Rock” is probably the genre “Hard Rock” in English.
This article has a list of them: https://en.m.wikipedia.org/wiki/List_of_rock_genres
Sounds like they are "Mixture Rock" (no idea, maybe a mixture of hard and soft rock?), Alternative (or Alt Rock), Loud Rock (yeah, probably hard rock). Don't forget my favorite, Progressive (or Prog) Rock. 😁😎