You'll notice that none of these Leslie sims mention the name "Leslie" at all. That's a trademarked brand name owned by Suzuki. Hence the imaginative allegories such as "Spin" and "Rotor".
Properly simulating the rotary speaker electronically or digitally has proven to be elusive. It is an acoustical effect, meaning it happens in air. Just putting a microphone on a real Leslie gives you an entirely different experience than hearing a Leslie interact with the room with your own ears.
I have a hardware unit called the Ventilator that does a very good job, but you'd never confuse it with the sound of a real Leslie. Likewise for the pretty good Leslie that's built in to VB3, or the very nice-sounding MVintageRotary.