I would describe your cats as brown classic tabby domestic shorthairs. The classic tabby mutation, responsible for the swirling patterns with "bullseye" markings, is one of the oldest known mutations in the domestic cat. It is certainly beautiful and eye-catching! Most cats are not any particular breed.
I see that one of your cats appears to have slightly crumpled ear cartilage. Has it been like this since the cat was a baby, or did something happen to your cat?
His ears are like that from before I received him veterinairan says he was probably burnt by sun I think he is more handsome with that ears .Thank you for response .
Domestic short hair tabbies with classic pattern. Not sure if the kitten has orange or if its just a reddish tone. I do hope you spay and neuter them all