Triton is 28'. There are 3 28' Pearsons, the Triton, 28-1, and 28-2. The first one is an Alberg boat, the other two are Bill Shaw. For some reason Pearson rounds down on lengths instead of up, so these are all called 28' boats even though the 28-2 is 28'6" and rounds up to 29' by anyone else's math.
Triton predates the Renegade.
Triton: TRITON (PEARSON) sailboat specifications and details on sailboatdata.com
Renegade: RENEGADE 27 (PEARSON) sailboat specifications and details on sailboatdata.com
There are many more Tritons than Renegades in the world. They don't seem to have much in common to me besides being made by the same company.