You're forgetting that Bloomberg is not running in any state before Super Tuesday. I don't see Klobuchar going far, so the Big 3 will be Bloomberg, Bernie, and Mayor Pete once the run up to Super Tuesday starts in earnest.
Time will tell, but I think you are spot on!
Doomberg = rich White male. It’s Klobuchar who will get the nod. I think the Dems know they’re gonna lose, but she’ll make it more respectable.