For me, it's:
Lowry x3 / Conley x2 - I use Rozier as a backup x2, and totally hide Lowry and Conley twice each. MJ plays some minutes here too, when I need to get A Gordon his playing time at the 2.
MJ x5 - backed up by Gordon twice, and Lowry/Rozier the rest of the time.
Horford x4, R Anderson x1 - it's mostly those two but Plumlee and Gordon play just a few minutes.
Kemp x4, Plumlee x1
Whiteside x5 - Rollins mostly backs up the 5 with Plumlee and a bit of S Adams at the 4, but I package Kemp and Whiteside for 4 usage points in the one season where I get less than 6 usage points from PG/SG. Which is worth it to get 17-18 Lowry in there, imo.
Horford seasons were tough to choose but I am going with 12-13, 16-17, 17-18, 21-22 and the 13-14 partial which I am partial to and is enabled by 11-12 Ryan Anderson. Horford is playing every single minute at the 3, and so is Anderson.
I haven't had a free minute yet but am very excited for the videos.