Hope you have seen Part 1:
https://abn397.wordpress.com/2021/02/11/review-of-pakistan-south-africa-test-series/
Continuing with individual performances in bowling:
Most wickets (20 and more):

Steyn is far ahead of the others. Rabada is the only current player here.
Best innings bowling (6wi and above):

Nothing from the current series. Oddly, KJ Abbott played only two Tests.
Nauman Ali took 5-35 (on Test debut) in the first Test. This is now the best for P v SA in Pakistan, surpassing the 5-46 by D Kaneria in 2003-04.
Best match bowling (all instances of 9wm and above):

Note Hasan Ali from the current series. His 10-114 is now the best for P v SA in Pakistan, surpassing the 8-210 by Abdur Rehman in 2007-08.
Best bowling averages (Minimum 20 innings, all instances):

Pollock and Steyn lead here, with Kaneria having the best average among Pakistani players.
Kaneria and Pollock have the best economy rates.
Steyn and Pollock have the best strike rates.
Fielding: Most dismissals (10 and above):

Boucher has by far the best figures here. The best by non-keepers are 23 by GC Smith and 21 by Younis Khan.
de Kock and Elgar represent the current players.
Most innings dismissals (4 and above):

The best by a non-keeper is 4 by Taufeeq Umar.
Most match dismissals (6 and above):

de Villiers has 11 dismissals which is a share in the world record. No instance from the current series. The best by a non-keeper is 6 by Taufeeq Umar.
Best dismissal ratio (Minimum 20 innings, 0.500 and above):

Headed by Boucher and de Villiers. The best by non-keepers are by Younis Khan and GC Smith.
All-round performance (see conditions in table):

Only Pollock and Kallis qualify here.
All-round match performance (50 and 5wi):

Only the lesser known PS de Villiers and Pollock.