Yes, it sounds like you have correctly reported to the IRS that you have cryptocurrency and have reported the income from your Coinbase reward.
Coinbase only issues a 1099-MISC if you have received miscellaneous income in excess of $600. They do not release a 1099-B but they do have gain/loss reports that can be downloaded and imported into TurboTax. They are likely to start releasing 1099-Bs for sales of cryptocurrency in future years due to changes in the tax law. They used to issue 1099-Ks but stopped doing so in 2020.
As you said above, all income is taxable regardless of whether or not you receive a form.
