Tie breaker for league standings.

I've searched the forums and couldn't find an answer for this. A group of us have formed an 8 team league and play a 7 game season. We decided we are going to play 5 seasons and give points at the end of each season depending on where each team finished and total the points at the end to declare a winner.

Twice now we have had teams finish with the same record and we can't find or figure out what the tiebreaker for the standings are. It is not team rating nor is it the head-to-head record. Does anyone know what determines the league standings?

As far as I can tell, I think Touchdown Difference is the first tiebreaker (TD scored minus TD received).

But I'm also very curious to hear what the rest of the tiebreakers are in Round Robin and Swiss format. Weird that you cannot see it anywhere 🙂