I ended up making a shortcut that works. I tried using Viticci’s shortcut generator, which got me most of the way there, but then I remade it. There is a link if you would like to use the generator; it works pretty well. It does use an LLM to parse the names (e.g., make it last name, first initial), but otherwise, you are drawing from data directly in the database.
https://www.icloud.com/shortcuts/53af5eb785ba42e4a42277a0290e0b09