The Boogeyman-who or what is it? Spoilers for WB and mild SK spoiler.

Thinking about the Boogeyman and apologies in advance if someone has already mentioned this (I did search)
>!is the Boogeyman an homage to Stephen King’s The Outsider? Which was in turn based on El Cuco? A creature that selectively preys on young people. El Cuco is represented in Brazilian lore as a female alligator (? The mushroom shaman’s pet).
Is it the same figure in the welcome video on the hotel TV?

In the book it was tracked by Holly. Is Patricia the Holly figure? She is also socially awkward and highly ethical!<