Current poll results for potential additional cowpones in @ask-raricow:
1st Fluttershy
2nd Pinkie Pie
3rd Diamond Tiara
4th Sweetie Belle
5th Silver Spoon
6th Twilight Sparkle
7th Apple Bloom
8th Rainbow Dash/other (background characters/OCs/etc)
9th Big Mac
10th Scootaloo.
Be sure to vote at http://strawpoll.me/5721752 because the top 5 are almost guaranteed to become canon, and that may be extended.
I’m surprised more people aren’t voting for etc. as it includes characters like Peppermint Twist and Derpy.
Update:
1st Diamond Tiara
2nd Fluttershy
3rd Pinkie Pie
4th Twilight Sparkle
5th Sweetie Belle
6th Silver Spoon
7th Apple Bloom
/Big Mac
8th
other
9th Rainbow Dash
10th Scootaloo
Should the etc./other option crack the top 5 (tied entrants still only count as one, so Twilight, Big Mac, etc. are in the top 5), options can be voted upon at http://strawpoll.me/5722663
Also, both polls allow you to vote for more than one option, so go nuts.
Final update. The top 5 (possibly 6) will be declared canon tonight