Thank you card etiquette question

Hey guys - I posted a while back about feeling kind of sad that no one in my family, my husband’s family, or my office was planning any kind of celebration, like a baby shower or sprinkle for me. It wasn’t about the gifts as much as just feeling kind of lonely and bummer that no one seemed to want to celebrate my baby, presumably because it was my second and “just” another boy. Which is understandable - we didn’t need much and I didn’t expect anything from anyone, but in my heart I guess I was hoping for someone to surprise me and make me feel a little special.

Well - last week, my coworkers did exactly that. It was so nice, and so unexpected. There wasn’t too much in the way of gifts - which was totally fine and so appreciated (it was a lot of diapers and wipes which will so SURELY go to good use) and my coworkers very, VERY generously all contributed to a target gift card which was a massive help in buying some of the things we DID need for our new baby. They made wonderful snacks and signed a card and I was so happy.

Now, to the question at hand. A few people did buy gifts and I wrote them thank you cards. I’m not sure how to get everyone else. I’m not sure who exactly came, people were in and out. I know who signed the card, but I don’t know who contributes to the gift card. Do I write out cards to the people who signed and mention the gift card? Do I write out cards to whoever signed and don’t mention the gift card? Do I do one of those two options and then write a card to post in the break room thanking everyone for the gift card?

I’m just not sure how to go about the more communal pieces of this. I was so grateful and the last thing I want to do is leave anyone out. What do you guys think? What’s the best way to proceed with the thank you cards so I don’t miss anyone?