Eff Wild got a question about teams calling up the most top prospects in a certain span. They ran it both on total top-100 prospects called up in 1 or 2 years and then also weighted the score, so calling up the #1 guy is worth 100 points and calling up #100 is worth 1 point. I think they used BA. The list goes back to 1990.
By total score, the 2015 Cubs lead the 1 year list and the 2014-15 Cubs lead the 2 year list. The 2014-15 Cubs were also tied for the most top-100 prospects called up in a 2 year span with 7.
Link here if you want to see the full list of teams with players included: https://blogs.fangraphs.com/effectively-wild-episode-2037-ashes-to-ashes-draft-to-draft/