I'm sorry apparently I'm bad at bsky... Do I subscribe to a list to block these people? The only options I get are subscribe or report 😅

When you hit “subscribe” you’ll get the option to block or mute people on the list.

Click the user, then their lists tab (same row as posts, media), then select a list. In the top right there is a subscribe button-- this will give you the option to mute or block those added to the list 👍🏻