The Amiga 1000 had the sidecar and the 2000 had the bridgeboard. Each had multiple ISA slots. The first time I saw Windows, it was Version 2.0 on an A2000.
To me, that seems like more hardware compatibility than a Mac or II.
It was also fairly rare. Not all that surprising since Amiga 1000's were never abundant in the wild, at least for a consumer/hobbyist targeted system. Appeal depended on a mullet like "business in the front, party in the back" intersection. Such were those days.