role players, maybe an ILB?

I agree. Assuming they get Sullivan back (and he is probably next on their to-do list now that NRC is signed), any additions at NT, ILB or OLB are probably role player types.

Just as one example if you look at PFT's top 100 FA and who's signed/available there's not a lot the Rams would want. Possibly DL Poe or DaQuan Jones? LB Zach Brown, Todd Davis or Preston Brown? One of those three could be a good fit. WR Jordan Matthews?
PFT Top 100 Free Agents