The RetroManCave YouTube channel recently made me aware of the Sinclair PC-200 / Amstrad PC-20 and I already knew about the Tandy 1000EX / 1000HX but were there any other IBM-compatibles (or mostly compatible) using that same all-in-one wedge form factor?
There was the Schneider Euro PC. Schneider had been selling Amstrad computers (the CPC line, the PC 1512/1640, and the Joyce) in Germany. The Euro PC in 1989 was their first attempt at an own design, doubtless inspired by the success of the Amiga 500 and the Atari 520/1040 ST.
I had (though have since sold) a Key-Comp 386 similar to the one pictured at atariage.com. It had two ISA slots (for video and network cards) at the left-hand end of the case, and built-in parallel and serial ports.