Well, I don't know that there is a certain type of player that you need to target. The big difference for me is roster make-up. In a h2h league using typical strategy you'll be carrying more SP's than you would in a roto league that has a max IP (assuming daily changes now). In a h2h league you'll need to carry 6 if not more SP's out of a 21 man roster. Several guys in my 14 team league actually carry 8 SP's. In a roto league you'll carry 4, maybe 5 sp's. In a roto league MR's can be used very effectively to help with k's, era and whip - in a h2h league you pretty much have to dedicate to ONLY using MR's and closers if you're going to get an appreciable effect out of them (since even 6 MR's aren't likely to pitch more than the equivalent of 2 starts - I know from experience on this part
). Also in h2h leagues it helps a lot more to have position flexibility especially from your bench guys as you'll want to get 7 starts at every position whenever possible in h2h while in roto you're normally limited to a total of 162 games over the course of the season from each position.
So basically no, the players that you want on your roster aren't really different. Just the number of guys you carry for each role.