^ Not only are there no NL newbies in there (such as the deer, hamsters, and the much-loved Marshal), Static appears in there twice (places 2 and 8). So I wouldn't use it as a guideline.
This is a somewhat more accurate guide to character worth that richu put together: click.
Another rule of thumb is that certain species tend to be pretty popular by default - i.e. cats, wolfs, dogs, etc. Really "cutesy" animals are also pretty popular amongst a variety of people.
Not to mention some of the new animals, like Julian, Zucker, Merengue, etc.
Off the top of my head, and in my personal experience/opinion...
Beau, Diana, Fauna, etc etc deer. Oh my god people love the cutie deers.
Julian and Marshal ofc. Stitches is also sold for high amounts.
Merengue is extremely popular too.
Marina and Zucker are really desired too. Then I guess Bob or Tangy or really any cute cat, but those two are requested a lot.
eta: ffffffff I forgot the wolves. People go nuts over wolves!! Lobo/Fang/Wolfgang/Freya/Kyle/Whitney it doesn't really matter which one tbh. I'm probably forgetting some but there's more than one person trying to do a wolf town, and they're a high commodity regardless.