I really enjoyed The Terror by Dan Simmons, so you could give that a try if the premise sounds interesting to you. It definitely nails the slow burn suspense/horror elements you mentioned, and I personally loved the survival horror aspects of the novel. Many of the characters were interesting to me but I wouldn't describe character development as a big feature.

Otherwise, Lock Every Door was a fun YAish listen, and more character driven.

I'm also a King fan – if you haven't read The Outsider or The Institute yet, you might like them. The Outsider has more of a true crime bent and The Institute is tonally similar to Doctor Sleep.

This is my go to “if you like Shirley Jackson try one of these” lists

White is for Witching by Helen Oyeyemi

The Icuras Girl by Helen Oyeyemi

My Body and Other Parties by Carmen Maria Machado

In The Dream House by Carmen Maria Machado (memoir about an abusive same sex relationship)

The Bloody Chamber by Angela Carter (grotesque, erotic, gothic, feminist fairytales)

The Magic Toyshop by Angela Carter

The Woman in Black by Susan Hill

Beloved by Toni Morrison

Mouthful of Birds by Samanta Schweblin

Eileen by Ottessa Moshfegh

I cannot recommend Rebecca by Du Maurier enough. Not exactly horror or even mystery per say, but it's very unsettling, gothic, atmospheric, psychological, and very much a slow-burn. If you loved Haunting of Hill House, you'll probably love Rebecca. They actually have quite a bit of similarities between them. If Hill House was a gothic romance instead of gothic horror, it would read like Rebecca.