I got two magic system ideas which I can share. Some of which I don't plan on giving since I'm not really into sharing my ideas much.
First would be Programming Magic Systems.
Its kinda easy to explain since magic comes from the power of binaries which are the origin of all magic.
To tap into magic, a person must have an aptitude to the multiple type of magic, namely different coding programs.
A person can easily tap into magic however the aptitude to use magic mainly depends on how you can access different kinds of magic tech. From how advance your thinking to how complex your magic coding skills work.
For normal people, they can easily tap into the [Text] magic which sounds simple as augmenting this magic is simply just commanding and empowering oneself through such magic.
Then, as you progress, you soon find out different magic uses such as [Ordering], [Align] and other magic coding skills which can be easily used however the more complex the magic code you make, the more powerful you are.
This could form multiple hierarchies in the system such as Security Code Magicians, Hackers and Virus Users, each having different Coding skill trees and other magic coding uses.
Another Magic System idea would be Mirror Magic Systems.
For a person, they have mana however, they can't tap magic and uses Mirrors to cast magic.
Kinda like jojo(summoning stands) but Mirror Magic users are capable of using magic depending on the quality of the mirror and how they use their mirror buddy.
If they duke it out with their mirror, they become physical magic users, capable of using physical enhancement on themselves or others.
Each magicians of that world aptitude mainly depends on their personality and how they interact with their mirror selves, supplementing them with their own use in their magic.
Money users would buy high quality stuff and uses money as a way of damage, healing or other things.
Gamers would seem op because they could level up but it only works on their mirror selves and not themselves. So even if you can earn money or items, its only your mirror that would get that benefits.
Healers to even powerful magicians, it depends on the mirror and your mirror self which can make you strong or weak.