Connectors with multiple RF feethroughs

Does anyone know of a connector that'll pass multiple 8+) RF signals with specs somewhere in the ballpark of 100kHz-3GHz, isolation between signals at least 80dB or so? I'm aware of the FCT connectors

Samsung and friends have high speed connectors that typically have a ground plane 'down the middle' of a two row connector, but the data on their website seems squarely aimed at digital signals where a couple percent crosstalk is fine; in my case there can readily be a 0dBm signal right next to one that's -80dBm, so the ~ 20-40dB isolation between signals is far from adequate. I could insert interstitial grounds between the signal pins, although I was hoping to find something off-the-shelf that already comes with data, rather than having to sit down and sweep something like the Samtec connection on my own.

Thanks,

---Joel Kolstad