A lot of the names on these lists are not getting pushed Kofi is stuck, and unless something drastic happens he will be stuck in this spot for the rest of huis career or until he leaves WWE. Kozlov is in no way being pushed if anything he is being buried. How do you do from fueds with John Cena, Triple H and The Undertaker to being in a tag team with Santino and consider that any bit of a push? Evan Bourne just got his ass handed to him by Mason Ryan Monday night, and before that got some lucky wins over Jack Swagger who also is arguably getting buried, not a push. Mason Ryan I think right now may not be the guy you want in the main event, has a future as long as he is given time to develop and not rushed into the main event picture much like Kozlov was. No Divas are being pushed, right now that division is dead until Kharma comes back I seen Eve's name on here, she is not being pushed if anything she is being buried within the division she may come off as "the leader" of the Divas to an extint, but A.J. and Kaitlyn have been getting more TV exposure than her, and she is a former champion. Kelly Kelly is getting pushed, but she has a future, she will be in WWE for a long time, not to sound sexist, but she is attractive, she is athletic, and she has mainstream appeal WWE isn't going to let her go anywhere. That being said here is my list of guys who fit the category of the question asked:
Ezekial Jackson:
You see this every couple years, a guy with an impressive physique and that is pretty much it. Big Zeke has yet to do anything to impress me his moveset is nothing that any other big guy couldn't do and he has the same look as 100 other guys before and 100 more after him will have. You can say all you want about Batista, but he could have a 30 minute match and keep me watching, I can't see Big Zeke even having a 30 minute match at all. He fits in the same category as Nathan Jones, Luther Reigns, Tomko, Shad Gaspard and Chris Masters as far as I'm concerned and will likely have about the same amount of success.
Sin Cara
I know I may catch it for this one, but I just don't see him ever living up to the hype. He has an awesome moveset don't get me wrong, but if we are going to base it off that Kaval, Paul London, Shelton Benjamin and Jimmy Wang Yang should all still be on the main roster and getting pushed to the moon. I think Sin Cara is just of "that other masked guy" he doesn't talk, I think people are eventually going to get tired of his "mood" lighting and you can't hide his botched spots on Smack Down forever. I'm not saying he is going to go anywhere WWE has invested a lot of time and effort into him, and he may put the axe to the grindstone and really become a star, but based off what I see now, I don't see him elevating any higher than upper midcard status.
Mark Henry
This happens once every couple of years. A Mark Henry push. He will fued with the top names, maybe main event a lower level PPV or have a title match on the Royal Rumble card, but that will be it. Mark Henry will probably never hold one of the current World titles, and if he does (which he shouldn't) I don't know it would be much longer than a couple of weeks. If ECW or a third brand were still around sure I would say he probably would get a title run or two, but it makes no sense. Wade Barrett, Cody Rhodes, Sheamus, Christian hell even Jinder Mahal are all more likely candidates as heels on Smack Down in my eyes to have a title run before Henry. I think the booking of him is what ruins it. He is a monster now, but six months ago he was crying because he missed Evan Bourne, his little buddy. Plus I still havn't wiped his affair with Mae Young out of my head neither, and X Pac kind of buried him years ago too if anybody remembers, thats another reason I can't take him serious.
R. Truth
I will hand it to him, he is entertaining in his role, he is taking what is there and making the most of it, but what next? Where can R. Truth go from here? Whatever fued he has next is a step back Cena is going to move on to Del Rio, Riley need to fued with Miz a little longer to establish his characters, John Morrison is still hurt, Big Show is fueding with Mark Henry (kind of) there is no other top tier face for R. Truth to fued with. Triple H isn't coming back full time, Kofi, Evan Bourne and even Rey would all be steps back in my opinion. He will be in MITB, and then he will be back on the mid-card. The most he will get is maybe a U.S. title run, and I highly doubt that will happen.