My favorite and most used is PRBoom+, more specifically the UMAP info fork, since it brings many QOL and modern features compared to the now abandoned and kinda old last official version.
Other source ports I use and love: Eternity Engine, Crispy Doom, DOOM Retro and GZDoom if I'm feeling ""funky"".
Very curious to know lemmy's favorites!
I too just turned into a Marxist after finding out about Linux and software freedom in 2020 lol
I think there might be more than a handful of us. Welcome, comrade.