In almost any other category, I'd normally advise against just finding the cheapest possible option because you often get what you pay for, but in the Texas electricity market it literally doesn't matter.
Even if the company you pick goes out of business (this happens every summer), they cannot cut off your power, and your contract will just get picked up by another provider who will either honor your current price or give you a window to switch to someone else with no penalty.
All that to say, as long as you just want to set up autopay and forget about it, there is no risk to you as a consumer to just pick the cheapest rate, no matter how shady the company sounds. So, any of the ones you listed should be fine. Just make sure you read the EFL before signing up to make sure they aren't doing something wonky with your plan (minimum usage credits, tiered pricing, etc).