Ubuntu

Ubuntu is the typical go-to.

Id recommend pop!_os personally.

Fedora is another great option.

The reality is, as a new Linux user, you'll probably hop around quite a bit. I say go for it! Try out everything you want.

Sidenote: I love the little arrows you had for links, how did you achieve that?

If they are willing and able to learn something with a radically different interface: Fedora.

If they aren’t: Linux Mint. There is nothing easier for a former windows user than Mint and it has a ton of built in tools for any kind of user. Not to mention forums support and massive package repos (+ built in flatpak).

You got the typical recommendations already, my advice would be to avoid most of the niche distros. I just don't think they offer much over something that is more mainstream, especially for your first foray.

The first distro I ran for any significant length of time was Fedora.

I really liked Crubchbang back in the day, but since it (and bunsen) have disappeared, after some distro hopping I settled on Lubuntu. It's nice and simple like Gnome 2 or Windows xp. Nothing surprising, and nothing trying too hard. Very intuitive for long time GUI users like myself, with none of the stability issues that plagued actual GUIs from the past.