Then there was John.
At first, John didn't even register as an angel, he was a short, stocky man with PTSD, an alcoholic sister and trust issues.
Basically, he was what used to be perfect prey for Sherlock.
but for some reason, knowing Lestrade, Angelo and Molly had made him less inclined to go after prey, he was sure there was probably something wrong with him now.
Instead, Sherlock invited the former soldier to move in as flatmate.
It wasn't until he'd accidentally walked in on the man showering, that he noticed the small wings that barely sprouted from his back.
When he'd asked, John just looked at him with confusion before asking him what he was talking about.
It took a while for Sherlock to realise, John didn't know he was an angel.
It took even longer for him to get Lestrade alone and ask him how John couldn't know.
"A Rebirth."
Sherlock's confusion must have been clear as the now almost entirely silvered detective decided to elaborate.
"A Rebirth is someone who died doing something incredibly brave or good and was brought into angel-hood, often it can take many years before they even realise what they are, it's less traumatising that way."
While he was still confused, Sherlock knew that was probably the best explanation he was going to get.
He was surprised at how it all ended up.