Kuemper reminds me of Mike smith. Overall they will give you above average goaltending but they let in weak goals at the worst times
honestly this is pretty much every goalie in the 3-15 range. Like the only two guys in the world you can rely on really are vasilevskiy and now shesterkin. even the next tier of guys (saros, markstrom, hellebuyck) have their stinkers, and then what you described is basically the description for “high end starter” lol (although i would argue that smith is FAR streakier, he mixes 10 game stretches of what you said with the complete inability to stop a puck for 10 games)