I haven't looked at radiators much until now, but there appears to be two levels to the radiators based on the Mopar part numbers available on RockAuto. Spectra lists 3 different options with core thicknesses of 7/8", 1 1/4" and 1 7/16". The core sizes seem to vary some too, as do the listed inlet/outlet sizes so not sure how accurate the info is.
The radiator hoses seem to be consistent provided their isn't oil cooler connections and not an HC. There does seem to be a split around the time the Eagle and 6.4 were introduced when there are oil cooler connections, but guessing that isn't related to the radiator.
Fans are a mystery. All of the wiring diagrams I have been through seem to show a dual fan setup for 5.7's, 6.1's and 6.4's while the HC got a single fan. But the offerings on RockAuto make me wonder if there wasn't a lower duty single fan option, maybe for the V6 cars?
Based on this I will be looking for any year radiator with the thickest core I can find and dual fans. I would prefer the single fan HC setup just to make the fan controller simpler but those fans seem to go a for real money.