• Go to "Customize Your Workspace"
• Open dev tools > Network tab
• Search for adminList
• Copy Value > Copy as cURL
• paste into a text buffer, then change adminList to list
• run the curl command, but output it to a file ... > emojis.json
• move the emojis.json file into the root of this project

Then run:

pnpm download emojis.json

This will download all of the emoji in that list into the ./output directory. It operates one file at a time to be kind to Slack's servers.