Outside of those three, I don't see any TE getting heavily targeted with our WRs and RBs.
We're not just talking about heavy targeting, that's an oversimplification. There have been two probs with our TE group...
1. Our starting TE (Higbee) has been an afterthought as a pass catcher. This isn't just because of the quality of our WR group. His hands have always been suspect, and due to that he's not going to be an early read type which is fine. But he's also not going to be a situational early read (i.e. some of the common TE type situations like down/distance/redzone) as often as TEs with better hands and it shows in his yearly stats. He is a good blocker, and useful as a surprise type receiving option at his current level of development, although that might change a bit if he continues to show like he has thus far in camp/preseason.
2. Our TE2 (Everett) has been developing for the past couple years and hasn't been good enough to allow for 12 personnel usage. Last year we were hoping would be the year he arrived but he wasn't ready. He made some plays, and has improved a lot as a blocker particularly in space. But he's been pedestrian at best.
If you take each of them for what they do and compare them against the league neither are anything special. Both could be replaced and upgraded easily. Neither are among the top ten of their peers, far from it.
IMO people need to take off the rose colored glasses with our TEs. Only thing we can claim from them to date is that they have more talent than most other teams' TEs but that is a difficult argument to define. I mean Everett for example isn't a huge target, has good hands but not rare, and is fast but not a game-breaking threat, really what makes him special is his natural RAC talent.
As I keep saying though, I hope all that changes this year. If these two guys keep doing what they're doing we'll see more 12 sets and they'll collectively see their stats rise as the Rams' offense will be more diverse and difficult to stop because of it.