Not sure about sodium content, but green yucateco is my household staple, and secret aardvark from portland is one I found recently and is perhaps the best hot sauce I've ever had. It's so good you want to eat it by the spoonful.

Both of those sauces aren't vinegar-forward (like tabasco is), FWIW

No, a lot are local, some aren't. I don't know the names directly off hand. I try a lot of hot sauces without really much brand loyalty. I just have noticed a lot more lately (last few years) that have maybe 1-2% sodium as opposed to 7-9% on traditional hot sauces at big brand stores.

Check out these guys. https://www.torchbearersauces.com/buy/ Nutrition labels on the website. Low sodium in most. All very good sauces. (I am not a representative of this company)

Marie Sharp's Smoked Habanero Pepper Sauce "Not too mild, not too hot, just right."

I bought two dozen bottles of it after I found it in Belize.