In BG3 Wizard = Czarodziej, Sorcerer = Czarownik. Warlock might as well be "Czarnoksiężnik", though all three at too close for my taste.
I think there are a lot of jokes in Poland of "how is X in Czech" that are completely made up. There are some funny instances (I was very amused by "koupelna"), but I think most of them are bad, maybe a bit racist dad jokes.