Trivia

How about Jim Thome and/or Lance Berkman? They're both really good hitters who tend to get overlooked.

Other guesses:
Jim Thome 21.9
Lance Berkman 28.0
JD Drew 26.3
Ross Barnes 24.9 ha
Prince Fielder 16.8
Juan Gonzalez 14.7
Rafael Palmeiro 19.6

Although most of these instances have already been guessed, they aren’t players who aren’t in the HOF because of steroids or betting. Both #2 and #3 are players who pretty much started their rookie years and were very solid contributors to their teams.

Jeter
Maris

You didn't answer about Ichiro who may be retired. His first 7 seasons were pretty spectacular.

Excellent guess Rosie!

But no. Jeter comes in at 33.6

am going to guess Bagwell or MacGwire?

Rocky Colavito?

Johnny Callison?

Ichiro is not retired. If he WAS, he’d be #2 at 40.9.

But, Ichiro is bound for the Hall, as are Chipper (32.5) and Jeter.
These two players are long-retired, not recent retirees who will probably make the Hall.

Maris 24.1
Colavito 26.2
Callison 23.3

These guys didn’t start immediately, which hurts their totals

am going to guess Bagwell or MacGwire?

Bagwell would be the perfect guess is he weren’t already in the Hall 43.1 in his first 7 seasons is awesome.

McGwire missed a chunk of time. His is 24.8, and misses his biggest years.