I don’t use an enclosure, I use a “toaster”, or hard drive dock for that. Easy to switch between drives to have a rotating backup. I think the one I went with is Pluggable: https://plugable.com/products/usbc-sata-v
However, this might suit you. The site has a lot of enclosures, you should take a look.
I have a 4 bay stardom tb2 drive that can do several raid config but also looks like 4 individual drives. I used to put a 1tb ssd drive in one bay and raid 3 other spinning drives in the rest. Worked great for backups and cloning. Could even boot off it. Mac only limitations with the raid I think, but I never had a windows box with tb support to try.
But, then again we are playing around in the area where a motherboard alone can cost as much as some of the NUCs people argue over. Heck, that Akitio enclosure is more expensive than some of these NUCs.