I would say:

• Fedora if you like a point release, which means that every 6 months you do a big update of core stuff like the desktop environment, and on Fedora everything else is always generally up to date.
• OpenSUSE Thumbleweed if you like a rolling release, which means that you don't do big updates, everything is kept to the last version that the software repository has, this is how arch works except in Thumbleweed the repositories are updated slower than in arch and less likely to break.

But you could also go for any more up to date debian-based distro, like Pop_OS or even Ubuntu, they might be easier for a newbie user. Fedora and OpenSUSE will be more up to date though.

If you do use Ubuntu, don't stick to just LTS versions, use the last version available (which right now happens to be an LTS version). The "extra support" it offers is not something desktop users care about, it's outweighted by the benefits of more updated software.