Not who you asked, jumping in until they reply: Windows and most GNU/Linux distros are much further apart than most GNU/Linux distros are to each other. Unless you’re doing a lot of manual meddling or using hacky tools, the biggest change between Mint (Ubuntu/Debian-based) and a Fedora-based distro, in my experience, was that apt is replaced by dnf, so if you install apps from the command line instead of a prettier software manager (I did lots of programming so this was normal for me) then the names of programs and libraries were a bit different. I’d also make a list of things you’ve installed (VPN software, chat apps, etc.) and look them up in the Fedora packages site or their own website and make sure they’re all available. I would assume they would be, Fedora is popular enough.
The desktop environment (Cinnamon vs. KDE) will be an initial change, but they’re both familiar enough with a program menu, task bar, like how Mint lets you carry over some of that same basic surface-level intuition that Windows taught.
Here are three variants of Linux Mint with different Desktop Environments: (click their example image to make it larger)
All of those are Linux Mint, they use pretty much the same core tools under the hood, but the desktop environments change how you engage with them. Mostly the way things look, the way you organize programs on your screen, and the default apps (like which text editor it comes with by default). This can change your experience a lot, I think Cinnamon looks nice and is smooth, while MATE and XFCE are more lightweight and might be better for older computers or if you don’t like something about Cinnamon.
Now, those are all somewhat similar, they have a program start menu in the bottom left, a taskbar on the bottom, the basics are familiar. There are some (not officially supported by Mint) which are more different, like GNOME (Ubuntu’s desktop default) which has a different app launcher instead of a start menu and a different way of switching between programs. Then, as others mentioned, some people choose to not even install a pre-designed Desktop Environment and only install some of the more core components of a DE, like the Window Manager. People who really love the keyboard might use a tiling window manager, these tend to make you think “wow, this person’s a hacker”, where they’ll rapidly switch between programs using keyboard controls, with the window manager automatically shifting and dividing new windows so that they tile together to fill the screen. Loosely speaking, the opposite of a tiling window manager is a floating window manager, where windows just float and you move them around with your mouse, just like Windows (well, apart from the tiling options in more recent Windows versions when you can drag a window into the corner and it tiles to fill the screen.) I think the “best of both worlds” midpoint is a dynamic WM? I’m not sure. hyprland is an example of that.