It’s hard to make specific suggestions for such a cable.
The stuff I have direct experience with ranges from expensive to insane, in terms of prices, and oddly the ones I liked best (and that I thought looked the prettiest and were the most nicely constructed) were the “cheapest” ones. But in this case “cheapest” was still >$600.
And the cheaper stuff I’ve not tried.
Very plain-looking, but functional, cables can be had from Moon Audio. They can build pretty much anything you need, including adapters. I’m not a fan of their appearance, or the way the cable feels, but they do a good job and will stand behind what they build.
Bear in mind you’re going to pay about an $80-100 premium over the normal prices of most cables just to get official LEMO connectors (which is what the Utopia use), so don’t let that throw you off ($80 would be at cost for those connectors).
Probably the best-best from the boutique builders are Norne Audio. They’re the least expensive of the “big boys”, but beautifully made, aesthetically gorgeous, with first-rate materials/connectors and lots of sensible options. Though you’ll wait anywhere from 4-12 weeks to get your cable.
The sky is the limit from there.
You can also have someone re-terminate (and shorten if you want) the stock Utopia cable for 4-pin XLR and then use adapters from there to get to the 2.5mm TRRS connection for the QP2R.
I run into cable issues so much that I designed my own line of modular cables. And generally I think DIY is the most effective way to go here if you can.