I've considered and used a couple system not mentioned, not to go off thread , but one method not to consider is dovetails. I realize they would be out board on the post and wouldn't be visible (and they reduce the size of the post) ,but where wood only is needed for strong corner in tension they fit the bill.
What if any effect would skew pegging do? By skewwing I meen placing the peg so it just nicks the blade of the tenon so the relish can't split out , but the blade can't come out.