Yep. In the US, the only IS200 is the turbocharged IS200t, so I've always abbreviated it as ISt. All other iterations of the IS (IS250, IS300, IS350) are 6-cylinder.
The IS300h (hybrid) sadly isn't available in the US.
It depends on what area you're in, but Lexus just released Lease Cash incentives on the UX for the first time.
Also, the HRV is more comparable to the UX based on size and price. A CRV is more comparable to a NX.