Best (for me) is ArchLinux, it’s never in the way and has the best wiki at https://wiki.archlinux.org, which is also a great resource for other distros.
Worst are probably Ubuntu and derivatives.
Best: depends on needs and usecases. Obviously, the majority will name the distro they use here, because if they would think another distro is better they would switch.
Worst: either Pop_OS (the most pointless, with the killer feature of “nvidia blob out of the box”, saving literally one command after installation), or Fedora (RedHat + too unstable + and too much RedHat new experimental shit being tested). Sorry for those who like those distros, but that’s my opinion.
I’ve been looking at Pop! OS recently because I want to start using Linux again but I feel like it’s a standard Ubuntu-based distro with a few things preinstalled. How’s that different to any other distro with GNOME UI after I install the same packages?
Best distro: the one you are currently using on a daily basis.
Worst distro: windows
For my use cases at workstation level, Manjaro makes it really easy to work with whatever tooling I need - but I’m comfortable on CLI and aware of the risks/benefits.
Wouldn’t suggest it to a noob, ofc, but for me it’s a good middle ground where I can get things done, and also easily work with edge cases.
Not that I can’t build whatever I need to in the deb world, but I prefer to work with instead of against a distro’s packaging.
Best: the one I use.
Worst: the one I don’t use.