There is a way to find them on the file system, particularly those preinstalled by windows. I have relevance for this... somewhere.
A proper inspector for UWP apps would be useful all the same.
If you want to remove preinstalled apps from windows and prevent them from being installed for new users or uninstall them from existing users, there are like 3 different locations to check.
You can remove it from the installed windows image using dism, but then you need a different command to remove them from program files or program data or something, and then something else entirely to remove them from the user.
I have stuff written in varying degrees of working, but I don't think I ever put any of it into full production use.
I'm pretty sure I have more than this: https://bigfix.me/fixlet/details/23890