Thank you all so much for your input, I was also experiencing similar problems - we've been using Quickbooks 2015 and switched to 2022 and no vendors would appear on our 1099 report.
The solution that worked for me was to assign the mapping, which is way simpler than it sounds. Go to Vendors > 1099 Forms > Print/e-file 1099 Forms. Don't worry, you won't have to file anything. Choose which 1099 you use (misc or nec) then click through the first two prompts that show your vendors. All of ours were already assigned as 1099 vendors. Then you'll get a list of your 1099 accounts. This is where all of mine were defaulted to "omit these payments from 1099" so you just need to switch it to the 1099 category (probably box 1 for nec as mentioned above).
