Not really. In the comics, Groot has more than just 'I am Groot' to express himself. His character is developed with a broader vocabulary to fit different storylines and scenarios.
Well, 'Groot Graphic Novel' is mainly about the adventures of Groot. Groot is a very unique character. It shows his interactions with other characters in the Marvel universe. There are often battles, exploration of different planets and some heart - warming moments as Groot, despite his limited vocabulary, manages to communicate his feelings and intentions in his own special way.
Since I don't have detailed information about 'groot novels', it's difficult to name exact popular ones. However, if it's a new or niche collection, they might include self - published works by emerging authors. These could range from science - fiction stories set in far - off galaxies to heart - warming tales of friendship set in small towns.