Carbore and Sapient have 2 each. And the winner of the "inability to follow rules" prize is Spanky-prat, with 3 teams. 
don't worry they will get caught and taken care of I'm sure. I have a 2nd team but they are with a different league.
I went through all the teams there are only three people with more than one team.
Carbore
Spankham
Sapient f1
With that said, carbores are drastically different of course, one is blue flagged

which won't amount to anything.
Sapient f1's teams are hard to tell they look fairly legitimate. The drivers are not great on the 2nd team which is SV's Duckbill Racing, but the car/engine are solid and appear to be serious enough to warrant getting points.
As far as spankyham, this is just a blatant refusal to follow the rules.
If it were me, I'd DQ sapient and hams, and if possible remove the blue flag team just to be safe but not DQ carbore.