I think it depends. Lua is great for scripting - like when X happens do Y. I agree that makes sense for a case like Home Assistant. Sometimes you really want the result to be a data structure, not an interactive program, in which case I think more sophisticated configuration (as opposed to scripting) languages might be better.
Probably not very similar, but Git Butler is very interesting. It adds its own layer of management so that you can have multiple branches “applied” to your working tree simultaneously. It’s helpful when you have multiple changes that should go into different branches, and some that shouldn’t be committed - it has a system of lanes that help keep track of all that. Or you can test how changes from two branches interact.
Last time I used it, maybe 6 months ago, it was rough around the edges so I didn’t stick with it. But they’ve done lots of work since then so I’m thinking of giving it another go. It is (last I checked) an all-in tool. When you’re using Butler on a project you probably won’t be able to use other git tools.