Minifigs makes 1/144th, which they list as both 10mm and 12mm. Personally, I think they're closer to 12mm, which is 1/144th scale.
Apparently, the British say 10mm is 1/150th scale, so there's about a 5% difference in size. Pendraken makes Cold War vehicles in this scale, though most of their items are earlier Cold War models. They've got quite a few new items in the queue, or recently released.
There are some plastic vehicles in 1/144th as well, e.g. from CanDo, Takara, etc..
Can't recall any Strykers, other than the horrifically high priced resin, "collectibles" you can find on Hobby Link Japan for about $30 USD a piece, for resin kits. Seems rather daft pricing to me, when you can get 1/72nd scale, prepainted and fully assembled metal vehicles for half that price.
Perhaps someone will make affordable Strykers, eventually.
Can't hurt to bug people at the various companies to ask.
I do that all the time, for earlier Cold War stuff in 1/144th scale, e.g., still wanting:
Marder 1 IFVs
Spz Kurz (Spz 22-11) with 20mm cannon
Spz Kurz with 81mm Mortar
Jagdpanzer Rakete with SS-11
Jaguar 1 with HOT missile launcher
BMD-1 IFV
PBV-302 APC
BO-105 helo with HOT missiles (want 1/144th scale)
I've even had some success in getting companies to produce a few things too, in this scale, and in 1/100th scale, e.g. Jagdpanzer Kanones, M114s, etc..
So, I encourage you to write the various companies, and ask them to consider your requests.
You might also encourage others to do the same here, since if multiple people ask for the same things, they're more likely to be produced.