In my opinion, the AmigaOne series of computers is as much Amiga as the classic line ever was and is, the reason behind it is that it is endorsed and licensed by Amiga as the owner of the trademark, thus makes it a follower to the classic line, altough with a different approach of manufacturing. The same for the OS. The Amiga500 is no less an Amiga than the A1000 is just because Commodore began manufacturing them, right ?
As for the hardware, neither the AmigaOne nor the Pegasos (or whatever they will call it) is amigalike in the construction itself, but the AmigaOnes carry the name as they should, its just a matter of ownership.
Beos could be called Amigalike thanks to its hidden amiga mode, atheos, aros and many more aswell.
There's nothing wrong with calling MorphOS amigalike, cause it is. But it will not be more than that unless they aquire the official status of TM ownership.