"fyi - I am a tax professional"..."and get 1099 at year-end"

But there is no such thing as "1099."

However, there are a lot of different Letters as suffix to "1099" which makes a difference. 1099-B? 1099-Misc? 1099-NEC?? 1099-OID?

In other words, as a professional, you know it matters. Your professional training in tax preparation is supposed to cover this, along with your updates to stay current with the tax regulations. Even if you are not preparing returns for clients, you should have the current info for your own needs. The IRS has all the answers for you on the web.