This feels like a decent place to plug one of my vibe-coded side projects Mac Monitor: https://kristiandupont.github.io/mac-monitor/

I made this mostly because I wanted something to signal to me that the CPU is running wild. With no fan, I often discover this a bit late, so I wanted just a very subtle indicator in the menu bar. I also added a UI in the browser which shows you some details, though nothing near the level of Process Explorer.