Trinnaman, MLP, Shumway, Simon, Hifo, Bushman
I think those six guys will catch at least 60% of the passes. I could see any order, though. There is the potential for a few dark horse receivers like Tanner or Lotulelei to emerge, but based on last season and coaches' comments, these are the guys I expect to catch the bulk of the passes.
Even if the TE aren't both in the top four, they will make a big difference. They'll draw safety attention, so we should see more one-on-one coverage deep for Trinnaman, Hifo, and Simon. And Tanner will let it rip way more than Taysom; I expect at least four deep pass attempts per game.
Everyone is really excited about Bushman, for good reason, but MLP is going to catch a lot of passes this year. I wouldn't be surprised if he wound up tops on the team. I think it will be him or Trinnaman.