Here are some of the squads i came up with, with the lovable characters of highschool who for some reason cant hate.

They have too much groupchats- (Including their big group chat filled with almost all the players we know and love up till the nationals)

Squad 1 (Karasuno First year squad)
-Hinata
-Tsukishima
-Yamaguchi
-Kageyama
-Yachi

(Headcanon: Hinata probably started this squad.)

Squad 2 (Captain squad) (I'm sure you know who is in which team by now-)
-Kuroo
-Bokuto
-Oikawa
-Daichi
-Ushijima (To Oikawa's dismay.)
(Probably add in Daishou along the way (To kuroo's dismay))

(Head canon: They probably have a group chat for all of the captains to keep in touch for favors and updates on the matches/practice matches or for just fooling around.)

Squad 3 (The Mom squad)
-Suga (Karasuno)
-Akaashi (Fukorodani)
-Yaku (Nekoma)
-Iwaizumi (Seijoh or Aoba Josai)
-Semi (???) (Shiratorizawa)

(Head canon: Suga or Kuroo made the group. (Kuroo probably made it then left like the cheeky bastard he is. XD)

Squad 4 (Future Captain squad)
-Ennoshita (Karasuno)
-Shirabu (Shiratorizawa)
-Yahaba (Seijoh or Aoba Josai)
-Futakuchi (Dateko)
-Terushima (Johzenji high)
-Akaashi (Fukorodani)
-Yamamoto (Nekoma)
-Kenma (Nekoma)

(Head canon: Oikawa made this and wont let them leave. He also didnt know who would be the Nekoma captain so he put both Mohawk-chan (Yamomoto) and pudding head-chan/ Tactic-chan (Kenma) (Oikawa's possible nicknames-) in the gc)

Squad 5 (Pretty setter squad)
-Oikawa
-Akaashi
-Kageyama
-Kenma
-Suga
-Yahaba
-Shirabu
-Koganegawa (Fight meh!)
-Miya (Atsumu)

(Head canon: This gc is full of legends of the art of savageness, drama and teasing but they all secretly enjoy being with each other.)

Squad 5 (Mock-youth camp squad)
-Koganegawa (Dateko)
-Tsukishima (Karasuno)
-Kindaichi (Seijoh/Aoba Josai)
-Goshiki (Shiratorizawa)
-Kunimi (Seijoh/Aoba josai)
-Hyakuzawa (Kakugawa academy)
-Hinata (Karasuno)

(Head canon: I am almost 100 percent sure that Koganegawa, Kindaichi and Hinata practically forced them to join.)

Squad 6 (All-japan camp squad)
-Miya (Atsumu)
-Hoshiumi
-Kageyama
-Komori
-Sakusa

(Damn would really make a good team-
Thats all i could really say)

(Jk now lets look at my head canon for this squad
Head canon: They secretly go out to buy meat buns and milkshakes or maybe go ice skating or bowling (Idk why i see them doing this-))

Squad 7 (Idk what to name this squad so just please put your suggestions in the comments.)
-Kuroo
-Bokuto
-Akaashi
-Tsukishima
-Kenma

(Head canon: 2 crackheads dragging 3 innocent souls into a gc.
Composed of:
-2 crackheads
-2 savages
-1 normal one
(Try to guess who is who))