This is somewhat similar to squally's wRC+ stat, but dumbing it down to pure SLG%, Tucker had a .585 SLG% last year. Since 2006, there have been a grand total of 2 Cubs that have had 100+ PA and a SLG% that high:
1. 2019 Castellanos had a .646 SLG% in 225 PA for the Cubs
2. 2021 Schwindel had a .613 SLG% in 239 PA for the Cubs
That's it...no other hitter had a SLG% of .585 or better. Derrick Lee (post-2005), ARam, Soriano, Edmonds, KB, Rizzo, Schwarber, Javy, Willson, Bellinger, none of them had a season where they slugged as much as Tucker did last season.