Earlier quoted context omitted.
Noctalia will soon release v5, which is a complete rewrite in C++, which makes it even more appealing if you care about the performance.
DMS | super heavyweight | sluggish | lots of eye candy, GUI configurable Noctalia | welterweight | fast | professional look, GUI configurable Waybar | lightweight | fast | minimal, DIY theming, hand configured swaybar | flyweight | blazingly fast | ultra minimalist, hand configured Noctalia uses about 70MB more RAM, and a little more CPU than Waybar. No brainer.
With v5 I wouldn't be surprised if they can even slim it down more than waybar. No dependency to worry about unlike waybar with gtk core.