[...] Are there any audiophile level streamers / players (Innous or Antipodes level) that integrate with Apple Music? [...]
When you think about it, the ultimate Apple Music streamer is a Mac. Really. Seriously. Consider this:
From my perspective, in terms of maximizing subjective pleasure vs. expense ratio, a system built around a Mac (e.g. MacBook Air starting at $999 USD) is better than any streamer if you choose to swim in the Apple Music ecosystem. With a Mac as your central node, you have a huge amount of storage for AIF and ALAC files, along with access to Apple Music via high-quality streaming or Lossless file downloads. From this as your base node in a system, you can send high-quality Redbook and 24/48 files via USB to the DAC of your choice connected to the Mac (e.g. JDS Labs Atom +, Schiit Modi, etc.) or you can stream via your WiFi network to one or more Airport 2 compatible nodes on your WiFi network. At the moment, a used Airport Express makes an excellent Airport 2 node with digital optical and analog SE outputs.
Now a numbers-oriented audiophile might say that this does not support exotic "high-resolution" formats, and that is true, so if those are important to you the Apple ecosystem and Apple Music might not be in the running since Apple does not always play nice with the other children (e.g. their cold shoulder to Roon). But as someone who has listened to music and film soundtracks on several high-end systems (in people's homes as well as a couple of CES high-end audio shows) and a variety of mixing studios in Boston, Los Angeles, and New York, my Apple Music and Airport 2 ecosystem in my home sound pretty good in comparison to the memories of those experiences, and the key has been putting money into better speakers and/or headphones rather than the pursuit of exotic formats, as putting money into room treatments and transducers yields far more improvement to sound quality.
Whatever you choose, consider the entire ecosystem cost and the subjective pleasure of the whole of whatever you put together, the numbers, to me, don't matter if I can't hear a difference. I'm one of those people who can't hear the difference between [insert your favorite high-resolution audio format] and ye olde Redbook (16-bit/44.1KHz) audio files, but I can only speak to my own experience. I'm happily trapped in the Apple ecosystem, and the convenience of having my playlists across iPhone, iPad, and desktop is compelling, ruling out most other streaming options. Whether something is audiophile quality is the most subjective of evaluations and to me, what I've described is audiophile quality and depends more on the headphones and speakers as long as the other components (source files, DAC, preamplification, amplification) measure up to quality standards.