Both manga artists and novelists had their own strengths and weaknesses. It was impossible to simply compare who was stronger.
Comic artists who created stories through drawing usually spent a lot of time and energy studying the style, composition, color, and shape of comics in order to create unique and beautiful comics. They were usually able to perfectly combine the storyline and the characters to present them to the audience in the form of comics.
Novelists, on the other hand, used words to create stories. They paid more attention to plot design, character creation, and logical reasoning. They usually needed to spend more time studying the plot and characters in order to write a better story. A novelist could also use language to create a unique atmosphere and feeling that would allow the reader to immerse themselves in the story.
Thus, manga artists and novelists were both very important creators, and each had their own unique advantages and characteristics. It was impossible to simply compare which one was stronger.
If you wanted to find a domestic cartoonists, you could do a search on a search engine. For example, you could type in "domestic cartoonists 'names" or "Chinese cartoonists' names" on Google, and then filter the cartoonists you were interested in based on the search results. You could also view their works and introductions. You can also follow the mangaka's account on social media platforms to learn about their latest works and updates.
I don't think so. There haven't been any official announcements or indications that the HxH manga will continue. But you never know, maybe there'll be a surprise in the future.