Honestly kitty terminal, neovim, and Firefox. Those are my three most used programs. Bonus shouts out to Lutris and proton. After years of using wine proper, the relatively recent advancements in gaming on Linux has been incredible.
I tried to like qutebrowser so much, but the lack of a good adblock really killed it for me. I’ve been using Vimium and firefox to try and get something similar and it mostly works okay