Commas are the PUNCTUATION WINNER, except in Anne of Green Gables and Ulysses, where periods win out. These two novels are dramatically different from each other in other ways, though, and Ulysses is an outlier overall with almost no spoken dialogue via quotation marks and an unusual use of colons to semicolons. Exclamation marks are used relatively more in Wuthering Heights and Alice in Wonderland!
Exploring text in these kinds of ways is so fun, and tools for this type of text mining are developing so fast. You can incorporate information like this into modeling or statistical analysis; Mike Kearney has a package called textfeatures that lets you directly extract info such as the number of commas or number of exclamation marks from text. Let me know if you have any questions!
Yet more proof that Ulysses was an awful book.