I can't think of too many guys who have made their intentions to compete in MMA known, aside from the Armenian you mentioned and Bilyal Makhov who seems to have changed his mind on MMA as he has been wrestling at the highest levels lately. But I can name a bunch of guys who are either just starting or just resuming their MMA career.
-Deron Winn is 3-0 in pro MMA. He just very recently decided to still compete as a wrestler bc he is having such a hard time finding fights. He was a top freestyle guy in the States, bunch of foreign and domestic medals in international wrestling, good college wrestler though outside of division I, still very good. Extremely decorated High School wrestler.
-Gustavo Balart is 6-0. He was a Cuban Olympian in London 2012, world team member, silver medal in the world cup, etc.
-Maikel Perez Gonzalez is 5-1, a 2008 Freestyle Olympian from Cuba.
-Marthin Hamlet Nielsen, a Norwegian Greco world team member, European medalist is like 2-0. He trains with UFC guys like Emil Meek.
-Mark Madsen just took silver in Rio on the Greco side. Been one of the best Greco guys in the world for years. He fought a few times years ago and is now getting back into MMA full time.
-Damian Janikowski, olympic and world greco medalist is looking really good in KSW at 2 or 3-0.
-The Cuban freestyle world and olympic medalist Michel Batista is fighting as a HW now, training with Yoel Romero, he's like 4-0 in MMA.
-Canadian Olympian Arjan Bhullar is like 7-0 and already in the UFC.
-Khetag Pliev who Im sure you know, Russian who ripped Canada as a world and olympic team member is 4-0 in MMA now.
-Jake Butler is an NCAA DI wrestler and USA Wrestling High School big shot currently coaching and competing in Singapore at Evolve MMA and OneFC. 7-2 pro MMA.
-Raufeon Stots was a NCAA DII champ twice, same school as Olympian Tercel Dlagnev and Kamaru Usman. He fought for a spot in the UFC and lost for the first time.
-NCAA wrestling standout Tywan Claxton just made his pro MMA debut in Bellator and won with a spectacular KO. I expect big things from him.
-Logan Storley, 4x NCAA DI All American with some international experience is now 7-0 and in Bellator.
-Iranian Greco world champ Amir Aliakbari is looking like such a beast now, 7-1 in MMA, lost to Crocop.
-Bojan Veličković is fighting in the UFC for a while now, he competed well in the Serbian greco Nationals recently which is impressive.
-NCAA wrestler who is making his way into the world greco scene, Richard Carlson just won his pro MMA debut.
-NCAA Division I wrestler Curran Jacobs just won his pro MMA debut and has taken up catch wrestling.
-Monster HW 2x NCAA DI champ and world level stud, Tony Nelson has been training with Josh Barnett for a while now. I don't think he has fought yet but I expect him to.
-2x NCAA DI All American and HS wrestling national champ Kyle Crutchmer is out at AKA training with DC waiting for his first fight.
-NCAA DI All American and Junior Greco world team member Eric Grajales is 2-0 now in MMA but hasn't fought since 2016.
-One of Robert Whitaker's coaches, Talgat Ilyasov is an Olympian from Uzbekistan and 1-0 in MMA.
-Bekzhod Abdurakhmanov was tearing up the Northeastern MMA scene in the USA for a while but he is doing extremely well on the world freestyle scene so he has not fought in a while but he was like 4-0 in MMA.
Plus all the ton of wrestlers Bellator has signed. Theres probably a bunch more too all over the world.