Nickname: ‘Little Adam Schitt’ https://www.breitbart.com/politics/2018/11/18/trump-adam-schiff-little-adam-schitt/
"Your Favorite Trump Nickname" From what I've read, I think he goes by "moron" at the White House. Seems about right.
I'll do my part. Help Trumpy out a bit. Cory Booker- "Spartacus" Pete Buttigieg- ... He's openly gay and I gotta think there's no way even Trump would run with the obvious here. "Butt-Peter". Look at his picture. Hmmm. Here ya go... "Bug-eyed Buttigieg". Julian Castro- "Fidel" John Delaney- "Lazy Laney" Tulsi Gabbard- "Gabby (I talk too much) Gabbard" Kirsten Gillibrand- "Off-brand Gillibrand" Kamala Harris- "Kamakazi Kamala" Amy Klobuchar- "Snow Woman" Bernie Sanders- "Crazy Bernie" Elizabeth Warren- "Pocahantus" .............MAGA!
https://en.m.wikipedia.org/wiki/List_of_nicknames_used_by_Donald_Trump Perhaps the greatest page on all of Wikipedia- List of nicknames used by Donald Trump!