OWC aftermarket 1TB disk missing in Mac Pro after erase process; not found in diskutil, startup list, or install-to list
I was able to see the disks once I used Option-⌘-R as opposed to ⌘-R. It seems that the disk for whatever reason was not showing when recovery attempted to install straight into Mojave. Using Option-⌘-R started the OS install with Catalina and from there the disks were visible and installation could proceed.