Heroes 5.5 WarGame Edition - Tactical Edition.

No ice-themed Jotunn units are needed; their abilities clearly focus on lightning (air), plus a quote from the wiki:

It was believed that it was the Jotunn who caused storms, mountain landslides, and other natural disasters.

Nothing is said about ice-based abilities. P.S. Although other articles mention ice giants. Therefore, the name "Thor" is, in any case, a better fit. Minotaur was once just a name, not a title. "Thor" is already used as a name in games like Starcraft. And the association is good: divine power and lightning.

Added 10 minutes ago
In the meantime, I will be posting updates on the starting armies: Knights: Ellaine = 16 militia Dugald = 10 archers Rutger = 5 archers + 3 swordsmen Paladins: Nicholas = 6 armored troops Frida = 6 crossbowmen + 1 paladin Godric = 8 recruits + 2 clerics Templars (Inquisitors): Alaric = 2 adepts + 3 crusaders Valeria = 8 fanatics + 3 crusaders Orlando = 8 fanatics + 5 archers Rangers: Faidaen = 5 blade dancers + 2 hunters Ossir = 5 hunters Wingaël = 10 pixies + 4 blade dancers Vindicators: Anwen = 12 nymphs + 2 scouts Talannar = 8 leaf dancers Winraël = 10 nymphs + 2 guardians Druids: Alaron = 4 wind dancers + 2 archons Ilfina = 3 snipers + 1 radiant unicorn Diraël = 20 dryads Alchemists: Razaz = 5 granite golems Hafiz = 16 engineers + wagon Narhiz = 5 marble gargoyles + 2 mages Mystics: Jalib = 4 onyx gargoyles + 1 djinn Maahir = 4 onyx gargoyles + 3 magnetic golems Nura = 12 pests + 2 magnetic golems Archmages: Ora = 2 steel golems + 2 mages Cyrus = 12 incendiaries + 4 obsidian gargoyles Zeheer = 11 obsidian gargoyles Berserkers: Ingvar = 12 guards Karli = 12 javelineers Helmar = 8 berserkers Veterans: Ibba = 3 bear riders Rolf = 5 spearmen + ballista Wulfsten = 6 rock golems + 4 bone golems Priests: Tolgar = 6 shieldbearers + 6 harpooners Erling = 1 elder + 8 shieldbearers Hangvul = 6 harpooners + 4 vikings Lords: Agrail = 1 crimson nightmare + 10 imps Beleth = 4 succubi + 5 rift demons Grol = 5 hellhounds Destroyers: Daleb = 4 sulfur demons + ballista Biara = 7 demonesses Wayer = 7 parasites + 6 sulfur demons Infernos: Grok = 16 devils Nimus = 8 devils + 4 lilims Gward = 11 swift demons Assassins: Waishan = 10 lurkers Sorgall = 3 predators Letos = 3 beasts + 2 gladiators Sovereigns: Iranna = 6 hags Kifra = 3 giants Erin = 6 hunters + 1 shadow witch Warlocks: Railag = 4 assassins + 2 punishers Shadia = 5 assassins + 3 furies Sinithar = 3 furies + 2 raiders Reapers: Naadir = 8 spirits Lucretia = 7 cursed zombies + 1 nosferatu Deidra = 8 skeleton warriors + 5 cursed zombies Cultists: Markel = 5 skeleton archers + 1 plague lich Ornella = 8 skeleton archers + 1 vampire Arantir = 6 plague zombies + 4 lamias Necromancers: Orson = 12 poisonous zombies Kaspar = 8 skeleton servants + tent Vlad = 7 skeleton servants + 4 ghosts Barbarians: Keegan = 24 bandits Haggesh = 3 shamans + 3 steppe centaurs Tilsek = 6 bruisers Chieftains: Kun'yak = 3 nomad centaurs + 1 executioner Gotai = 14 beastmasters + 3 daughters of the sky Garuna = 12 beastmasters + 3 marauders Shamans: Kujin = 7 amazons Shak = 1 paokai + 10 defilers Argat = 4 amazons + 3 provocateurs