Do drive the RDX. Reliable Honda bits underneath, nicely done interior, right size, and great responsive drivetrain.
Lexus products not nearly as fun to drive.
CX-5 2.5t: spent a month with one, nice and refined but not really sporty, and I think you're looking for an SUV that drives like a sport sedan from your posts. Ironically, the Jeep Cherokee with the rarer 2.0t is a hoot to drive in comparison.
The Alfa is an Italian mistress, full of drama and passion but ... you're leasing, so Ciao! Bella if things turn sour.
QX50 - nice, but CVT ruins it.
Audi Q5 - drove one, left me cold for some reason.
F-Pace - if leasing then intriguing option - not all of them are uber expensive - there are a few new old stock ones on Trader. And it's a Jaaaag.