Species lost include Giant Eland, Gaur, Shoebill, Goliath Heron, and Black Heron. Kafue Lechwe may also be gone. Red-fronted Gazelle, Mandarin Sika, and Black Rhino are either very elderly in the case of the former two or being shipped out (rhino). Anyone's guess how long their Storm's Storks will continue to be around. Mind you most of those species were/are dead-end anyways, but the Safari Park is not the rare species haven it used to be.
Many of the hoofstock species they do still have gone into phase out, for more details see yesterday's posts in this thread:
San Diego Zoo Safari Park News 2022 [San Diego Zoo Safari Park]
There is a fair bit of discussion throughout that thread and elsewhere on the site about the current species trends at the safari park.