The throttle feeling of a cable operated throttle is more about how much air the engine wants to breathe. I’d say it’s kinda still related to rpm, but it might be a completely different feeling on a turbo engine, that I haven’t experienced.

There is a noticeable difference in feel between ICE cars with physical throttle cables and those with electronic throttles…the drive-by-wire models have a very small amount of lag between pedal input and engine response. If you’re attuned to it, or drive “spiritedly”, the effect is quite noticeable. I think mainstream cars mostly switched over around 20 years ago, I remember learning about it when I googled for why the accelerator pedals in new cars felt so weird to me.

I think there are a few reasons for it, one of which is simply increasing efficiency by smoothing the accelerator input a bit. I’ve only driven an electric car a few times, so I’m not sure if they also have this delay, but I would expect they do.