Useful Certification to get

Dear Experts,

I would like to find out what would be the best suited network certification to obtain for myself.
I have a mish-mash background, after getting M.S. in computer science with software engineering emphasis, I was working as a software/field engineer, then software project manager.
After taking time off to raise children, I started my own business as an IT consultant, where I did everything from hardware/software installation, infrastructure management, training, and troubleshooting for small businesses.  All of my knowledge came from basically learning as I needed from vendors and other sources.
A few more jobs later, I am now bouncing back and forth between Sr. System/Network Admin roles at my current employer.
My problem is, besides my degree, I do not have any certification, but I can administer Cisco/Fortinet Firewalls, switches, Windows servers, Exchange servers, and am versed in PowerShell scripts as well as Java, VBA.  I feel very non-standardized, and would like to have some type of certification.  Since I really don't need to learn more about Windows servers or Azure AD, I was leaning towards some type of network certification.  Cisco, CompTIA Network+, etc.  I do have basic theoretic knowledge on networking from my graduate courses, however I have a feeling some of those are outdated at this point.
Please advise.