Idk if it counts as less popular, but I always thought Sublime got too much flak. The popups are annoying, but other than that it's a great editor imo. It doesn't have the bells and whistles of something like VSCode or a full IDE, but that's also why I like it, it's much more snappy and lightweight. And you can still get things like LSP working so for me at least it gives me everything I look for in an editor. I even decided to pay for a license a few years back, considering I make my salary with this thing the cost is negligible.