Satoshi was/is a smart man. It's quite possible that he anticipated stylometry and deliberately wrote in a deceptive dialect. Though I've also seen some forensic linguists say they can often see through that unless it's done very well, with the tells being overuse of stereotypical features of the dialect combined with a lack of more subtle indicators like what modal verbs are used, for example. Also I admit this line of "he did that on purpose" reasoning makes anything unfalsifiable when taken to the extreme
Adam Back certainly fits the profile the best. Invented Hashcash, has a Ph.D. in Distributed Systems, and is English. He's also still deeply involved with Bitcoin and has a lot of influence, which best can be seen when he successfully proposed the "speedy-trial" activation method for Taproot.