I’ll start with the Rays… And including their fWAR and current teams in parentheses. 10 players in, and the Rays have far exceeded the Twins fWAR total.
On Active MLB rosters: 14 total
Wander Franco (4.7), Vidal Brujan (-0.9), Brandon Lowe (11.3), Jesus Sanchez (MIA 1.4), Matthew Liberatore (STL 0.0), Nick Solak (TX/CIN, 1.2), Shane Baz (0.3), Lucius Fox (WAS -0.6), Nathaniel Lowe (TB/TX 5.1), Taylor Walls (-0.1), Anthony Banda (0.5), Shane McClanahan (6.0), Colin Pache (0.3), Ian Gibaut (CIN 0.5)
Players in the minors:
Brendan McKay, Brent Honeywell, Ronaldo Hernandez, Moises Gomez, Joe McCarthy, Josh Lowe, Resly Linares, Nick Schnell, Tyler Frank, Jose De Leon, Drew Strotman, Garrett Whitley, Tanner Dodson, Jelfry Marte, Alejandro Pie, Tobias Myers
McKay and Honeywell have had cups of coffee in the majors. So you could argue over half of their FanGraphs top 30 are major leaguers.