Creating a Shortcut To Send A Group Message

This started because for some reason, when I try to share a photo or URL, I no longer see my most recent Messages contacts in the quick share panel of the share sheet (just the most recent contacts from FB Messenger). So I have started looking into shortcuts. I am able to create one to send to an individual contact, and one to a group message that includes a mix of iPhone and Android users. But what is stumping me is how to set that up so that I can send one to a group of iPhone users where the name of the group has been edited.

If I tap "Recipients", I can add them individually, but when I tested that out, anything I tried to share didn't end up going into the existing group message.