harley's,since bout '86, have become the standard that other bikes 'try' to emulate.
I can't argue that some bikes do appear to try and emulate the Harley look, but none of the ones I'd own do that. If you really want to get a great bike have the folks at PaughCo or Titan build one - at least it will be a true work of rolling art.
Other than look [which is all about personal taste anyway], there is nothing worth emulating. From a technology standpoint, Harley is pretty far from state of the art, although they offer a great prop for egos. But that's just my opinion, and I'm probably biased. It is interesting that the 'high-end' of the custom V-twin market [AKA custom Harleys] will have approximately zero Harley parts - almost everything is replaced with better.
But now I'm your off topic co-conspirator.
YMMV, IMO, etc.