What would the tan baby boy be considered?

Hey folks new to this site! Excited to be here! So my dad's brindle red nose female had puppies with my friends black and white male Staffordshire pit terrier , she had many white and brindle puppies and black and brindle puppies but the one im connecting with is the odd man out as far as looks go ?! He looks very much like my fawn bull boxer mix somehow?! Anyone able to identify his markings better than me? Don't mind the kennel we normally never use it but a couple babies kept crawling off on her so we found a secure spot for her and the pups