You might also be interested in Richard Hunters series of articles also in the British Go Journal. He republish the articles in book form as The monkey jump workshop, cross cut workshop and Counting Liberties and capturing races.
Specifically the last one I mean, apparently they’re found in issues 102 to 120, so you’d have to look through them (not too bad they have tables of contents and things) just to see which ones are the capturing race ones.
The book is fairly cool, lots of discussion of when groups in capturing races end in seki.
https://www.britgo.org/bgj/bgj