Partial answer:

Two, 30 and 45
Both under space systems command, united states space force.

It is actually a relatively new structuring of the US Space Force

**Space Force Looks to Operationalize New Structure, Build Culture in 2022**

https://www.airforcemag.com/space-force-looks-to-operationalize-new-structure-build-culture-in-2022/

>"We have gotten rid of the numbered air force echelon.." 

>“So we’ve taken the base operating support, all that combat service support functions, and we’ve taken those and put those into a garrison..."

>".. and now we have the delta, which is singularly focused on the operational mission that we’ve been assigned.”


>The **delta**, *not the squadron*, is the “presented force” for the Space Force. And compared to the size of Air Force wings and groups, deltas are small, at least when it comes to personnel.

>“...when I was an ops group commander, I started with about 2,000 people, if you add in all the contractors, all the civilians. … Now we’re sitting about 400, **450 total** when we add everything together,”