There are only 5 handel size/style in the Busse family for Res-C.

Plain Large- DFCG DFLE S6 S6LE YH YG also the old swamprat CT and BR all have the same size handel and the Busse tali-wacker I think

Plain Small-the YK YKLE DMLE UK(urban keeper) and the old swamprat HR BC and PR(paul's rachet), oh and the HR variant with teeth

Basic Large- Busse Basic 7 and 9

Basic Small- DMCG and Busse Basic 3 and 5

Mudder- the SS4 and the Swamprat bogdog

To the best of my knowlage that is it. No other Res-C handled blades I know of.