VSTs have provision for note names, but unfortunately not everyone implements.
We do ask for them which is why it just appears for some synths.
It's possible to add entries to the master.ins to get the keys to show in the PRV when right clicking the keyboard.
It involves creating an entry for your drum keys of choice in the master.ins.
There's a .Note Names section.
You can create a [AD Drums] section, then put in the list of keys.
In addition, you'll need to put the same block in the
.Instrument Definitions section
[AD Drums]
Patch
=1..128
Key[*,*]=AD Drums
Drum[*,*]=1
Save the updated ins file, restart SONAR.
Then to use the new choice, just right click the keyboard in the PRV.
K