Yeah, distro variety is a block for adoption, but when you do adopt Linux, you understand why they’re there.
Good thing community starts to center on a few distros for beginners, particularly Linux Mint + 1 or 2 more. (I’m a Manjaro adept, but ready to bury the hatchet to welcome newbies, and always do recommend Mint - it is good too)
Sure! I just don’t expect people who just came from Windows/MacOS to get into that. I’m talking “just works” here. Later on, they’ll be able to develop that understanding too, but to each its time.
Debian remains the king of “something stable that works well”. And with release of Debian 12 that brought a lot of quality-of-life improvements, easier non-free package managing etc, many users go for it on their desktops. So I suggest you do too.
Manjaro KDE (default) makes Arch a wonderful starting point. Beautiful (gold standard of KDE implementation), truly blazing fast (thanks, Arch), incredibly Windows-like, and unlike Arch itself, completely plug-and-play.
Their update withholding schedule, while causing anger among some Arch enthusiasts, is what makes the system super stable and completely effortless to maintain, while remaining close to the bleeding edge.
The only thing newbies should be taught is that AUR should be used with caution due to potential (rare) dependency version conflicts; luckily, Manjaro repos have just about everything you can think of and AUR is almost entirely unnecessary.