Furutech connectors specifically and Rhodium plated connectors generally are in the minority among top tier cable makers.
While Audience and Siltech have used Furutech FI-50 for some of their PC's, Ansuz, Argento, Audioquest, Hemingway, Lessloss, Nordost, Shunyata, Stage III Concepts, and Stealth make their own connectors for their highest level power cables. It appears that from this list of in-house connector users only Argento and Stealth use Rhodium plating. Crystal Cable, Echole, Fono Acustica, Gryphon, and Pranawire use (non-Rhodium) Oyaide connectors. Sablon uses Platinum plated Bochinno. Ansuz and Lessloss use gold plated connectors, Stage III uses palladium over silver over copper. Audioquest uses polished silver plating.
With the Odin 2, Nordost is dropping the Furutech Rhodium connectors in favor of gold plated connectors made in-house.