Can You tell me which genre these bands are?

Behemoth are NOT black metal, they are considered blackened death these days,their earlier stuff was bm, Napalm Death are not goregrind haha, they are more punk/grind, a typical goregrind band is Carc,so I dont know what that fella above is on about, Death Angel/Megadeth/Slayer are thrash bands, as for the rest I havent a f***ing clue because I only listen to metal :)