Responses

Right thats why ive always thought All for One could be midoriya's dad. Oh and on top of what you said Lets say Inko did see midoriya's dads quirk in person so of course she thinks its fire. But all for one has multiple quirks so if he only used the fire around her then he couldve gave her the slip which is why no one is suspecting him as midoriya's possible dad
Midoriya's mother said that his father could breathe fire. So at best we know Midoriya's father has a fire quirk (interestingly just like Shoto's father has a fire quirk).
I'm curious as to whether Midoriya's Pediatrician was working for All For One during the same time he was caring for children. Based on how he looks, he seems to be that doctor who was in AFO's employ in the later chapters. You know, if All For One was looking for children for a specific reason that had to do with their quirks this doctor would be in a perfect position to help him. I'm wondering if what the doctor told Midoriya's mother (the whole pinky toe joint thing) was a lie.