McGriff is in the Hall of Very Good. Didn't get to 500 HR, only had one Top 5 MVP year, career high in HR was 37, but was really strong in the post-season (.303, 10 HR in 50 games) and zero Gold Gloves, meaning he was just "a guy" at first. his last year of eligibilty for the HOF (2019), he was a distant 10th with a bit less than 40% of the vote,
Sheffield had a slightly better career. 509 HR, .292 average. .514 slugging, but kinda the same thing - three top three MVP finishes, but never led the league in HR, RBI, runs scored, slugging. Won the '92 batting title, and 1 World Series, but was "ehh" in the playoffs - .248, 6 HR and 19 RBi in 44 games. He hit 40.6% in 2021 in the vote in his 7th year. This next year will be the last for the likes of Schilling, Bonds, and Clemens, so maybe he'll get in after that?
Those two guys for me are like the Dwight Evans and Steve Garveys of the world - really great career, but you were never a guy people thought - best of the best without a doubt.