The only magic system that's really stuck with me recently is the one from the nothing mage by J.P. Valentine has the classic different colours correspond to different types of magic red fire blue water etc. But posits what if a mage is born with magic in the Xray/gamma ray end of the spectrum
Oh and Mage errant by John Bierce which has a really interesting magic system which all of the main characters are completely broken outliers in and making their screwed up magic work for them rather than the conventional techniques is the whole point.
@johnbierce.bsky.social mentioned!
Lol I literally spent my afternoon today writing an essay on the hard/soft magic system discourse www.reddit.com/r/Fantasy/co...