I didn't pay close attention, but since TNG several of the Trek shows have had a couple of top-billed actors and then listed everyone else alphabetically.
Bruce Horak is listed alphabetically. I noticed recently, in watching the pilot for NCIS: Los Angeles (my partner is a big fan) that Linda Hunt only became regular cast in episode two of the series - she's listed as "Special Guest Star" in the pilot. I think Horak is there in the credits for the first SNW episode as well, though.
In the case of SNW, she's at the end as "And Rebecca Romijn". Not quite like the 70's and 80's show where a bigger star was listed last as "Also Starring....".
After Anson and Ethan, it does go alphabetically, until Bruce Horak comes after Babs Olusanmokun, so it kinda falls apart there.