I had a Lenovo ThinkPad Laptop at work years ago. It had that little Red TrackPoint Mouse button in the middle of the Keypad.
I didn’t care for the feature at first, but after using it for a while I was hooked.
Overall it was a great Laptop.
I think they stopped making them with that feature.
I too love the Lenovo “nipple” mouse.
I wish someone would invent a tiny version that plugs into the USB and is flush with the right side of the keyboard. A pinky joy stick.