i can't answer as to whether what you got were RSUs vs RSAs. The thing with RSUs is 83(b) does not apply so no income should have been added to your w-2. with RSAs unvested shares are repurchased by the company while with unvested RSUs they're forfeited back to the company
the other weird thing with the 83(b) election, it's the employee who decides whether to make it or not and not the company
see this link
https://carta.com/learn/equity/rsa-vs-rsu/
if you are still unsure what they are you'll need to confer probably with a tax lawyer. it is possible your company is not correctly applying the tax laws especially if what you have are RSUs.
