The name "Trump" has been problematic for liberals to turn into a derisive variation.
Drumpf doesn't really say anything -- it is just adding a D and doesn't form a word or embed one. Like "Often Wrong Soong" it is unsatisfying and certainly not insulting.
Likewise "Orange" is unevocative. Is the state of being orange a bad thing? Like Halloween or an orange?
The name "obama" and espcially all the names he and his wife mike used made it pretty easy for us (my preferred was always will be obozo).
If they haven't settled on something useful by now, they probably won't in the next 8 years. They do have that long to start working on variations for "Pence." It is a unit of English currency so there might be something there.
Most unfortunate for them.
(btw: who in the hell would get KGOP as being some sort of derisive term for the GOP? We Conservatives have been using eGOP for next to forever and it is a true slam on it).