There shouldn't be any difference in lub/sizing .45, .44.or 9 MM, just get the lub/sizing die in the size you want. ie; .452 for the 45's , .430 for the .44's and not sure about 9's but would say .356, I think Lyman lub/sizer dies will fit and work in the RCBS just in case you can't find any RCBS or the $$$ is a factor.
NOW you will need "top punch's for each bullet, RN or SWC,, again, I think Lyman top punch's will work in the RCBS, as to the Lee 102 RN, just look at RCBS & Lyman bullet designs and get the top punch that is the most like your lee