Based on our record, MangoHUD seems to be more popular. It has been mentiond 2 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Configuration of MangoHud is explained in the README at the MangoHud git repo. It will tell you what to put in your ~/.config/MangoHud/MangoHud.conf. You can have it set up as described within like 90 seconds. If you don't already have MangoHud installed, just install it using the AUR helper of your choice (or if you have the Pamac GUI installed, you can use that). You just need mangohud-x11, lib32-mangohud-x11,... Source: almost 2 years ago
You would have to write a merge request yourself to add the functionality. If that's above your skill level, maybe file a feature request at https://github.com/flightlessmango/mangohud. Source: almost 3 years ago
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