This isn't intended to be a comprehensive list. I'm just going to be periodically updating this list with titles from the following IMDB search parameters:
https://www.imdb.com/search/keyword/?keywords=horror-for-children&ref_=ttkw_kw_11
UPDATED: 6/4/24
HBO Max Launched: May 27, 2020
HBO Max becomes Max: May 23, 2023 (USA)
June 2018 - AT&T acquired HBO as the company buyed Time Warner (and rename it to WarnerMedia).
April 2022 - Discovery buys WarnerMedia and creates Warner Bros. Discovery.
cartoons
by KeePach