I only know of these Orang-Utan,Jodo, and Mahogany.

Rumplestiltskin? Cartoone?
I know that Fruit Machine's third single The Wall /Willow Tree only came out on a small label in the U.S.

Jan and Lorraine - Gipsy People. Recorded in London with British musicians like Clem Cattini but only issue din US on ABC in 1969.

Peter & Gordon - Hot Cold and Custard. US only issue of their final LP.

PM

The Dave Morgan (ex-Uglys) album, Hilton Valentine's 1969 solo LP 'It's All In Your Head', Zoot Money's 'Welcome To My Head'... I'm sure there are loads really.

Dana Gillespie "Foolish Seasons"

Graham(e)Bond-Love is the law
-Mighty Graham(e)Bond
2 solid albums and released on cd by Esoteric!!

Methusalah
Tucky Buzzard
Chad and Jeremy

Dave Morgan LP was also pressed in Germany and Mahogany in Holland. There is Colonel Bagshot, which had also Italian and Japanese pressings.
Cartoone was issued in the UK too
Many other UK albums had foreign editions only (Sunday, Diabolus, Hallelujah, Janus and many other in Germany and/or Europe, like Ironbridge etc)
So stricly taking of Usa ... maybe Wolfe, Mick Cox Band, Edwards Hand 1st lp, Gary Farr 3rd lp, Hard Meat 2nd lp, Kevin Westlake, some Mark-Almond?

Philamore Lincoln - The North Wind Blew South