I tend to think of the CPU boards (Phase5) that originated in Germany before those that came from the UK (though I had a VXL-30 in my 2k, not sure where that was from). I recall the BoXer was from the UK, but Escom was German and wasn't Quikpak based in the US?
I tend to associate the UK with the bulk of the games and for having great printed magazines, but I don't associate the UK with any one major application... Germany, especially Haage and Partner and proDad seemed the most eager to see the Amiga become a serious business machine.
Honestly, Commodore were blind to just how big of an issue the NTSC/PAL differences would be. US users would love to have enjoyed the games played in the UK, but many of them either didn't run at all or put important stuff at the bottom of the screen where it could not be seen. That doomed the Amiga as games machine in the US, where it would be competing with Sega who had the advantage of their Japanese catalog being developed for the NTSC standard (of course that also gave C= an advantage over Sega in the UK).
It seemed to me that it was mostly the people working on 3D and video software that wanted the Amiga to incorporate MMUs and FPUs, presumably so they could justify their developing for those co-processors. The US and European branches should have worked on tech jointly and marketing separately. To an extent, they did just this. But IMHO, the CD32 was simply not an appropriate design for NTSC markets.
The NTSC/PAL thing was a pain in the butt, however, the later A500's and all A1200's could be booted into PAL mode and on the 1084 nothing was cut off the bottom. In my "group of gamers" 5 of us had PAL capable A500's and one didn't until I upgraded it. Also there were quite a few European games that were available in NTSC format in the late 80's, although if you try to download a copy now it will probably be the PAL version. Seems most of the cracked versions were from Europe.
