Clayton novels usually have strong character development. Take 'A Connecticut Yankee in King Arthur's Court'. The main character from modern times is thrust into the Arthurian era. Through his experiences, we see his growth, his struggle to adapt, and his attempts to introduce modern ideas into a medieval world. His character arc is complex and interesting, which is a common trait in Clayton novels.
I'm not sure exactly how many are on the list you mentioned. There are quite a few, with Edgar Rice Burroughs writing many Tarzan novels over the years.
Yes, 'Michael Clayton' is based on a true story. It draws inspiration from real - life events in the corporate and legal world, showing the complex power plays and moral dilemmas that can occur.
Tarzan is purely fictional. The character and the adventures associated with him were made up for entertainment. There's no historical basis or real events behind it.
Tarzan's story is purely fictional. It doesn't have any basis in reality. It's a creation that has captured people's imaginations over the years through books and movies.