What breed of cat is this?

This kitten belongs to one of the feral's in my are (which is small),but its different from the rest so I can't figure out who it belongs to.

There's only : 

4 tabby's

a couple of pure black cats

2 calico's

1 tuxedo

1 pure white cat

1 white cat with small gray and brown on her face and has a tabby tail

2 white cat with black spots

Now most are fixed but the ones that are not are :

2 tabby's

1 or 2 black cats(one went to have litter and never came back)

2 calico's

1 pure white cat(always near the car dealership and,has litters over there)

1 white cat with small gray and brown on her face and has a tabby tail(shes the oldest cat maybe 8+ and,had 3 kids and 2 are grown ups.One kid has been missing for 2 years now)

1 white cat with black spots

Now the kitten is all black but is really fluffy with long hair,while the feral's are all short hairs.The kitten has this color under its tail,like the black is fading to a very light gray.Also under the tail you can see because of this grey,that there are like tabby stripes but only under the tail.The top part of the tail and under belly along with whole body is black.It also has long hair on its ears and ,the rest of its body is just really puffy like a giant hair ball.
 

Now which feral could of had this little kitten?It appeared along with a tuxedo kitten about the same age,maybe 3 or 4 months old.They wander alone around the area and, they are afraid of humans.

Longhair is a recessive gene so that means that a shorthair can have a longhair kitten if she carries the longhair gene or if the daddy cat was longhaired or carried the gene (and since toms have such huge territories it could be a tom from across town that you've never seen :/). And any of the females with black markings (calicos, tabbies, blacks, even the white one if she's genetically black under the white masking) could have had a solid black kitten. So really it could be any of theirs. Or they could have been dumped and not related to any of the resident cats.