i use telegram web and it is awesome. Messenger web just sucks, i don't why actually, maybe it is because of the design. I have not checked the others (signal, wechat).
tl;dr web clients are probably more performant than their electron counterpart
I mentioned Telegram because the desktop version does not use electron. It's a QT application and is small and fast.
It doesn't look like, though. I refused to use the desktop Telegram for long because it looked like just another Electron app, until one day a friend enlightened me that it's actually a lean(er) QT app.