HighPoint does a lot of NVMe RAID controllers
Gen3: https://www.highpoint-tech.com/gen3-nvme-product-overview
Gen4: https://www.highpoint-tech.com/ssd7500-series-overview
OWC also has one : https://www.owcdigital.com/products/accelsior-4m2
Obviously there are more but these were the first...