That would make it an Ice-type with a high attacking stat AND a decently-powerful STAB move of the same category. That's a big no-no for Game Freak, apparently. You get one or the other, but not both. Lots of Ice-types get good-BP moves without the stats to use them, and many have high attacking stats but no good moves. A rare few have both, but that seems to come at the cost of an absolutely terrible Speed. At base 95 Speed, Kyurem is apparently much too fast to get good STAB.
I'm starting to think one of their senior game directors got attacked by a snowman as a kid and now wants to take revenge on the concept of snow by making the Ice-type a joke in this franchise.
So for this, I assume you mean "high Attack stat" and not "high attacking stats (ie special and phsyical)" since just about every single ice type gets Ice Beam & Blizzard (& many of them even get freeze dry, how nice)
So with that in mind I started looking at ice types with "good" physical Attack (my baseline is 100 base attack, which does leave those in the 90s in the lurch I'll admit) and see how that shakes out for the strongest generic ice moves which wow okay i guess are just Icicle Crash and Ice Punch alright cool cool:
Darmanitan-G: 140 attack, 95 speed (goes to 160/135 in Zen Mode) gets Icicle Crash and Ice Punch.
Beartic: 130/50 (does get Swift Swim at least?) gets Icicle Crash & Ice Punch
Avalugg: 117/28 gets neither, rip. Least this one makes sense not to get Ice Punch
Glastrier: 145/30 gets Icicle Crash
Sandslash-A: 100/65 (gets Slush Rushh) gets Icicle Crash & Ice Punch
Mamoswine: 130/80 gets Icicle Crash
Weavile: 120/125 gets Ice Punch & Icicle Crash
Crabominable: 132/43 gets Ice Punch. It doesn't get Icicle Crash, but it is the only pokemon that gets Ice Hammer, which is 100 BP
Arctozolt: 100/55 gets Icicle Crash (though this at least has a flavor reason, i suppose; the "back half" is associated with all the ice moves and not the "front half" which gets thunder punch)
Calyrex Ice Rider: 165/50. Gets Icicle Crash. Also gets the signature move Glacial Lance, the 130 BP spread ice move.
And finally, Kyurem
Base Form: 130/95 gets uhhh *checks notes* mmmm *doubles checks charts* alright it literally only gets one physical ice type move and that's Icicle Spear thanks to the gen 8 TM. I really thought this thing got Ice Shard....
Black Form: 170/95. Freeze Shock the devestating 140 BP ice move that can paralyze!!!!! Takes 2 turns to use. bad.
So I'm just gonna say that the only "physical ice type" who gets really ruined here is avalugg (how doesnt this thing have icicle crash...?) and Kyurem. And Kyurem feels the far more eregious one because it's not just a legendary it's a traditionally banned legendary. Those usually get some good stuff see also Kyurem! Whose special move pool gets about every ice move it'd ever want to go with its 130/170 special attack.