When suggesting a name, please be sure to reply to the image you're suggesting the name for, so there's no confusion! From my time in the fandom, it seems that a majority preference tends to win. Sometimes characters are known by more than one name in close ties!
This post is mostly to collect all the unnamed ponies in one spot, so it's a little easier to keep track of who needs a new name!
Looks like Spoiled Rich, whose maiden name is apparently Milk, so maybe Spilled Milk? Or Sunny Milk?
@EPPony The first one has a guitar cutie mark, the second looks like Aura, and the third looks like Braeburn with a watermelon slice. Maybe the first one could be something like "Mariachi", not sure on the other two, though the second one is just adorable.