Freddie Freeman, Matt Olson, Bryce Harper, Rhys Hoskins, Pete Alonso, Vladimir Guerrero, Paul Goldsmidt, Cody Bellinger, Yandy Diaz, Christian Walker, Nathaniel Lowe, Ryan Mountcastle.
Impactful first baseman will always be around mainly because you can take a less athletic guy without range or older guy and move them there and get the bat in the lineup every day.
Hoskins is a league average bat this year and was so duplicative, the Phillies moved their MVP RFer to firs
Alonso's impact is pretty much the Home Run Derby. And his agent is going to want 200+ million, so thanks but no
Guerrero impacts a buffet more than the baseball
Goldshmidt has been washed for years
Bellinger plays CF and is a slap hitter.
Diaz is a league average bat
Walker is a below average bat outside of Arizona
Lowe slugs .399 and is a somewhat abover average hitter. Not exactly impactful
Most of them arent that impactful or were to washed to play anywhere. Unless you're an MVP candidate, first base is where you move guys when they're too old to play anywhere else.