Is Conor the only fighter to dominate 3 weight divisions?

Featherweight, Lightweight, Welterweight.

I would like to see Khabib try this.

A lot of people discredit this, but it's for real. There's a reason Jose Aldo absolutely refused to move up during his prime.

There's a reason Khabib turned down multiple fight offers with Jose Aldo.

Conor is highly skilled and his skills are transferable. Most fighters just get by on size advantage alone.