Even on an M2 Mac Spotlight takes a second or two to appear after you hit the shortcut. Apple notes takes an absurd 8 seconds to start. Apple music and Spotify are also take seconds to start. Skype takes 10 seconds.
I'm very happy with my M2 Mac. It's a giant leap forward in performance and battery life. But Electron is a giant leap backward of similar magnitude.
To fix the Spotlight delay, you have to disable Siri in the system settings.
If Siri is enabled, the OS waits until you release the space bar to determine if you performed a long or a short press, which causes Spotlight to be delayed.
I just tried all the examples you gave (on my M1 Max) except Skype which I don't have installed here, they all load in 1 second or faster, maybe its something else on your Mac?
I'm using the Air M2 16GB, switched from Notion to Notes and Reminders, one of the reasons is that these apps are way faster. It also uses under 100MB of ram.
Note: The main reason is that Notion is fantastic but too much for me. I'm not that organized...
I'm very happy with my M2 Mac. It's a giant leap forward in performance and battery life. But Electron is a giant leap backward of similar magnitude.