New job, signing bonus but isn't on W-2?

I started a new job last June.  Prior to starting, I received a cash signing bonus (to cover relocation costs).  In reviewing my tax documents, I don't believe the signing bonus is reflected on the W-2's I received.  I do see the payout amount listed on my employee profile in our workforce management system along with my salary and normal EOY bonus (which was taxed properly).

 

I have an inquiry out to my payroll department but am investigating how to handle in case they confirm it wasn't included.

 

From reading other threads here, it looks like this may not be uncommon.  It's less clear to me, however, if I should self-disclose the income on 1099-MISC or 1099-NEC, or if it matters.

 

It looks like the other option is to use form 8919 and report it as unreported wages, but that might get my employer in trouble.

 

Advice?