Universal seems to really push Creature, at least in terms of merch and branding.
Everyone knows the big UCM names; Frankenstein, Dracula, Wolfman, Mummy, Bride. Consistently, Creature is also in this lineup. T-shirts, shot glasses, in-park costumes, Funko Pop Care Bears-crossovers, HHN houses, theming for park locations, anniversary celebrations. Universal treats Creature like a king.
Here's a bunch of examples I've found. These are all official Universal marketing materials and merchandise. Not Etsy/Redbubble fan-made stuff.
Apologies for any weird over/under sized pictures. It's hard to tell on mobile. I'll fix it on desktop once I'm home.
As an Invisible Man lifer, it can be ... slightly frustrating to see people call Creature obscure, off-beat, deep-cut, when he seemingly gets the same amount of representation as the frikkin Wolfman.

Alas, it seems like Creature has been positioned as a leading member of the group for a very long time now. Seems like Hunchback, Phantom, and Invisible Man fans will have to fight for scraps of their favorite characters, while "obscure" Creature gets to live it up in his penthouse suite with Dracula and Mummy lmao.