FWIW, Rodinal 1:100 for 18 minutes is a handy universal single time/developer/dilution trick I have run across. Used that way, it probably won't screw up any film so badly it won't print. But it probably won't be 'the best' either. I have processed rolls of TMax400, Tri-X and Delta400 together in that brew when the shots are not terribly important and I'm in a hurry. The results were printable in all cases. At that dilution, it acts as a compensating developer. Effective film speed is reasonable also. About 250 to 320 for ISO400 rated film.

Stupid photo tricks 'R Us