vArranger already gives you the list of all sounds of each VST
And you can change every parameters with 8 knobs

I don't think the sound list will work with Kontakt.
It is more for analog synth where a preset is created only with parameters changes

Jamkey seems ok for the keyboard part, but the controlling is not so good;

I prefer endless encoders than limited knobs
All buttons should have led feedback on them