To invite or not invite co workers

View quoted message Ok perfect idea 👍. They all know I'm aiming for a small wedding so I'm sure they will understand.

I did the same thing at my old workplace. I actually sent the invitations to their homes so it wasn't something I did at work. I also invited EVERYONE to the wedding shower or Jack & Jill although we didn't end up having either due to the pandemic.
I would definitely just have it delivered privately to their home or outside of work and let them know only certain people are invited due to "restrictions"

We both used to work at the same place and it was really small (~10 people) and we only invited some of our coworkers. Our rule was anyone we hung out with consistently outside of work, basically beyond a work acquaintance, got an invite. We also didn’t post a lot about it or talk to a lot of people about our plans to not hurt anyone’s feelings, but we’re pretty sure they’re fine since everyone’s been so supportive

It's pretty common to only invite some coworkers and not others, even in small work settings. If they weren't that close to you to begin with, I honestly think they wouldn't feel hurt for not being invited. On the contrary, it's probably nice that they won't feel obligated to spend money on outfits and gifts to attend a wedding by someone they're not particularly close with.

If you're still afraid that people will be weird about it, tell the coworkers who are attending not to talk about it during work and not post anything on social media.