Not sure PPs are right. I know my delightful brother has deleted and blocked me, yet I can see him on mutual friends list of friends and if I click on someone else’s post that he’s liked, I’ll see that he’s liked it.
Well, I can't speak for what happens on your FB page. But on mine, I can't see anyone I've blocked or who has blocked me on mutual friends list of friends or anything they've liked.
Are you sure he blocked you and hasn't just removed you and made himself unsearchable by name/email address?