While the basic descriptions of the "snake" and "N" model are accurate, they incorrectly restrict the number of tracks to 2. I have played on multi-track versions (I have seen up to 6 - which if playing with that many hands, really confuses the deal and throwing off to the crib).
The traditional listing is correct.
I personally own a marvelous board of 4 tracks in a 120 hole "oval" shape. I consider this neither stylized nor a novelty.
Larger boards have additional holes outside the tracks to maintain a running count of games, skunks, total points over multiple games, corners (a personal fav in extended game settings), and even high hands within a game. The latter 3 items in that list could be consider novel, but tracking games and skunks is quite traditional.