@jonatandor35 Thank you for the pointers. I have already checked both though and performed a sync from live to sandbox beforehand so all of the items are available in preview. Also ran a check on the live site and got the same results.
It’s odd that it’s getting 3 items, when all of the corresponding tags are spelled the exact same because they are automatically created via code. So there couldn’t be a random 3 that happen to be spelt differently - I also logged the items themselves to the console just to check if this was the case but the 3 are definitely spelt the same.