The black rhinos have been moved into the large South Africa field exhibit. (Sadly my safari bus operator did not distinguish between black or white and simply referred to all of them as rhinos).
The tour operator also referred to the giraffes as a group of reticulated and rothchilds (so yes they are together).
I used to have an excellent small flipbook of all Asian and African savanna species that you could only get when you took the more expensive caravan tour. This was around 1992. Unfortunately, it was destroyed with several other books in a water pipe break in my old apartment.
I do still have the general park guidebook published in 1991. It lists for the mountain habitat Siberian Ibex and Himalayan Tahr. I also remember seeing mouflon there on the old monorail.
The guidebook only mentions a few animals for each area and does not give a full list. For Asian Waterhole, they mention Formosan sika deer and Timor rusa deer. The Asian Waterhole has since been changed to Central Africa.
The guidebook mentions the following for Asian Plains: barashinga deer, Indian gaur, Javan rusa deer, Persian goitered gazelle, axis deer, blackbuck, Indian rhino. I also remember seeing saiga (yes really).