I've noticed that if a named monster has a stat block, in often can be difficult to know what type of monster it is just be going from the tags.
An example from Doomsday Dawn, part 1:
Drakkus the Taker is a Faceless Stalker. But his tags are
Aberration
Chaotic
Evil
Medium
There's no mention of Faceless Stalker anywhere in the stat block. You need to read the module text to understand what he is.
There's a similar issue with the second Pathfinder Society Playtest scenario, Raiders of Shrieking Peak. There's a named harpy, and the stat block in no way mentions that it is a harpy.
It should probably have the "harpy" tag, in the same way that goblins have the "goblin" tag.
