The State Guards are the militias

For example the Texas Guard:

https://tmd.texas.gov/army-guard

Not that I’d ever want them near anything useful but that’s the answer

Incorrect, that would be the:

https://tmd.texas.gov/state-guard

;) they are NOT the National Guard. They are the militia of Texas. (Texas State Guard aka TXSG). Subordinate to the state gov, only.

However TX considers it more complicated than that:

The Organized Militia: Consisting of the Texas Army National Guard, the Texas Air National Guard, and the Texas State Guard.

The Unorganized Militia: This consists of all "able-bodied" residents of the state who are at least 18 but under 45 years of age and are not members of the organized militia.