He is beautiful I think he looks like a dsh all black kiity, I can’t see tabby patterns but kittens can change drastically. If he is smoke the roots of his fur would be white. Does mom have pedigree papers to prove she is bengal? Otherwise she may be a dsh tabby cat. Also bengals are very distinct looking so it is hard to miss.
Whomever momma is, she cant be no purebred bengal. Because her children would too be tabby of some sort, more or less bengal alike.
As he is solid colored, she is at very best half bengal.
I am not sure, but I can see spots on his belly and faint stripes on body. His paws appear to be a little large and his face on the triangle side. His tail seems to be fluffy. His eyes are interesting shape in that pic. I would need to see more pics like a full body shot, sitting, standing, walking.
He looks super happy to be yours, that's for sure!