BTW, latest chapter basically confirms that pretty much every Quirk has vestiges within them, every Quirk has an imprint of the personality of the original user as well as any others who received the Quirk with it, that might explain how AFO took over so many people and gained their trust, if he ever gave someone a Quirk he had, his imprinted vestige would enter the person's body, so maybe his vestiges have spread all across all people he has given Quirks too and that's how he controls people like All Might said, this would also support while AFO would suggest giving Ragdoll back her Quirk, because he would be able to influence her to join his side
I think this is a pretty sold theory