I am currently using Linux Mint (after a long stint of using MX Linux) after learning it handles Nvidia graphics cards flawlessly, which I am grateful for. Whatever grief I have given Ubuntu in the past, I take it back because when they make something work, it is solid.
Anyways, like most distros these days, Flatpaks show up alongside native packages in the package manager / app store. I used to have a bias towards getting the natively packed version, but these days, I am choosing Flatpaks, precisely because I know they will be the latest version.
This includes Blender, Cura, Prusaslicer, and just now QBittorrent. I know this is probably dumb, but I choose the version based on which has the nicer icon.
True. I have run into a lot of dumb issues with sandboxing, mostly in choosing a folder other than downloads for file interaction.
I have overlooked Appimage, and I will consider it. I am intrigued that you put it before native package. I had not considered using the package manager of the language it is built in, which honestly is probably the optimal way to install a package.
Alright, I have some reading to do. I love learning new ways to do things. I am glad I asked!