They oftentimes will support EB2/NIW filings in my experience but to be clear, because of the green card backlogs, almost certainly an EB2 filing won't allow you to stay past your STEM OPT; you will need another basis to live and work in the U.S.
Thank you! I am not from a country with EB2 backlog. What do I/they need to obtain(such as Perm certification) in the EB2 application process for me to continue working past STEM OTP EAD expiration date?