I'm a lurker on this thread. The WHS second round sounds really similar to when my DD sat it for 2019 entry. She had the group tasks plus the short creative writing task and really enjoyed the day. She did something very strange for her creative writing and I remember being really worried that she may not have actually answered the question but she did get in and is in year 10 now. Mrs Lunnon left when she was in year 7. Miss Kennedy has been excellent. She took over during the pandemic (September 2020) and has managed really well. Thread from 2019 here: www.mumsnet.com/talk/secondary/3347389-As-the-Tiffin-deadline-looms-is-there-a-girls-SW-London-grammars-indies-thread-yet
DS went through the process last year. Emanuel interviewed everyone online. His interview was in November and exam in December (at school). KGS was the only school to do everything online last year which was off-putting for us. Most of the exam was online with two cameras on him and then the creative writing on paper which I had to quickly email in. The interview was also online.
Good luck to all of your children. They all usually end up at the right school for them eventually, try not to overanalyze numbers.