Now that Boss has been released, I think Dorsey could go TE as early as 2.2
I think the TE class this year goes about 5-6 deep and has a big drop off after that.
As of today, I think Ertz will be gone in the 1st and the rest are up in the air.
I would personally rank them...
1b. Kelce (Big fan)
Pretty meh after those 6 in my opinion.
Draftbreakdown has video on all these guys, check them out.