The Ms. Marvel Disney+ series would be a good place for that to happen, but that’s beside the point.
That’s not to say there aren’t enhanced individuals on Earth in the MCU, but there certainly aren’t that many of them.
And while it looked for a time like the Inhumans were going to take the mutants’ place as the primary group of people with special powers, not only has their been no mention of them in the MCU movies, but considering how events in Agents of S.H.I.E.L.D. and Inhumans haven’t been acknowledged on the big screen (not to mention how badly the latter series bombed), I suspect that their official introduction into the main MCU canon is being saved for down the line.