Setter harem is good an all, but middle blocker harem is superior.

Setters-
Sugawara
Semi
Oikawa
Kageyama
Koganegawa
Shirabu
Kenma
Akaashi (IK I FORGOT HIM, IM SORRY AKAASHI AND AKAASHI  SIMPS)

Or

Middle blockers-
Tendou
Tsukishima
Matsukawa
Kuroo
Lev
Aone

^ that would be a lot more chaotic.

There's also Suna and Hirugami(?), but I don't think they really interact with Hinata. I'm not sure though, I haven't seen either of them in season four yet.

Also some people count Yamaguchi as a middle blocker.

I'm also very tempted to make a harem book.