Linux Mint with Mate, Cinnamon, or you can install KDE afterwards

Even stuff that comes with gnome, you don't need to stay with it, and they'll all dual boot if you've got the unused space to install in (though GRUB will take over boot selection)

I would say Debian, its stable and customizable.

You can take out "to dual-boot with Windows 10" out of the equation, they'll all do that just fine especially if you stick with the bigger distros. They're all assuming that people will do that at first when trying out Linux.

My usual recommendation is to try out a few in a VM first, get acquainted with it, get a feel of whether you like it or not before you install it on your real hardware. Then simply enjoy and welcome to Linux!

I really like fedora linux, probably the kde version but it has many others as well. it's stable and easy to use.

I would highly recommend Ubuntu MATE. I just love its simplicity.

Though you may not need, AskUbuntu and UbuntuForums are great places to find help.

I've been running Ubuntu MATE alongside Windows 10/11 for many years.

Linux Mint is great, no Gnome.

Fedora is good choice too. It comes by default with Gnome, but it's *very* easy to switch to KDE, or XFCE.

GL.

Puppy Linux. Small & quick & stable.

As long as you are able to install it on your PC, I think that every distro can be used. Also a rolling relase distro like Archlinux (I use it on my laptop which has also win10 installed)

Devuan for consistant stability and change to testing branch and you'll never have to install new releases, it will do in-place upgrades while testing branch still being consistantly stable.