After the recent addition of BEAM (Equihash 150,5) support on NiceHash the service for selling and buying mining hashrate has become more active and has just added two (three) more new algorithms – CuckARoo29 and CuckAToo31 used by GRIN and Lyra2REv3 used by VTC. NiceHash support for GRIN on the software side is still somewhat lacking, with the latest GMiner 1.28 pretty much currently the only available miner for Grin (CuckARoo29) available for Nvidia GPUs under Windows, no AMD Grin miners with proper NiceHash support for now it seems. Lyra2REv3 on the other hand is more widely supported and available already on multiple software miners for both AMD and Nvidia as it was an anticipated fork for VTC, so developers had the time to get ready. An example for a compatible AMD miner is the latest WildRig Multi and for Nvidia you can try the latest official ccminer by tpruvot or the latest CryptoDredge which is faster in terms of performance compared to ccminer. Due to the interest and demand for Grin mining hashrate currently profitability wise it might be interesting for Nvidia miners to try selling their hashrate on NiceHash and get paid in BTC for it while waiting for the Grin ecosystem to get more developed and functional that it is at the moment.