One thing I'm growing to appreciate is that the difference between a late inning reliever and a matchup guy is super thin. The bulk of relievers are consistent matchup options, but how much you can trust them against opposite handed hitters is a fleeting streaks and slumps situation.
Palencia, Zef, and Webb are three good pitchers I'd generally be comfortable have closing games. It doesn't take a far left tail outcome for them to be demoted to matchup guy, but they should be a good foundation.
Miller, Maton, and Rolison are probably good matchup guys, and the former two have shown some potential to be more. I think this is a solid enough middle relief group even if I don't love Maton's salary
I suspect we'll run two long relievers? The SP depth is too thin to just raw dog it with 5 SPs and what's at Iowa. Garret and then either Cabrera or a FA like Civale?
There's some solid depth at Iowa too. Ferguson was very good in a matchup role. Riley Martin looked great before he got hurt. Porter Hodge should be back early in the year. The Iowa SPs too even if you're bearish on them as SPs are probably nice relievers.
I'd be hard pressed to do anything big in the bullpen. Do your typical waiver claims, sign an injury rehab guy (Harvey?) or two, or maybe trade Kevin Alcantara for his RP equivalent. But there's no reason to put money here that could go to starting pitching or the outfield.