Johnny Duerden covers a lot of Asian football for ESPN & a few other media sites. Was based in Korea for years, but I think has moved on.
I know who Li Tie is from his Everton days, and am aware of Chan Yuen-ting's story, but don't really know about their coaching history . No idea about Adnan Hamad either.
Choi Kang-Hee has been in charge of Jeonbuk for most of the last decade, apart from a couple of years in charge of the national team, and is easily the most-decorated of the 5 in this article. Jeonbuk are one of the 'haves' in Korean football, owned and funded by Hyundai. Under Choi, they are perennial contenders for silverware in Korea, and have won 2 Champions League titles, including this year (and been runners-up once). Choi also coached Jeonbuk to a win over Auckland City at a World Club Championship, although it was when Auckland were only the 6th-best club in the world.
While there's no denying he's been successful, my 2 chief concerns would be:
(A) moving from Jeonbuk to the Phoenix isn't too dissimilar from a successful Victory coach (Merrick) moving to the Phoenix, and being expecting to work the same magic with reduced resources and influence (did I mention Jeonbuk were hit with a 9-point penalty and fine for match-fixing, which cost them this season's league title?).
(B) He's coming from a culture where seniority is very important, and questioning authority figures isn't encouraged. I'm not sure what the club culture is like at Jeonbuk, but personally, I'd have doubts about how much input & feedback he'd welcome from senior players. Choi's playing career (including 40 international caps) would command a fair bit of respect in Korea.
Kiatisuk Senamuang has been fairly successful since taking over the Thai national team. He's won the Suzuki Cup (Southeast Asian Championship), becoming first person to do so as player and coach, and led the U23s to ASEAN Games success. These ended droughts of 12 and 6 years respectively. He's also qualified for the 2019 Asian Cup for the first time since Thailand co-hosted in 2007 (when he was still playing), and Thailand are into the final round of Asian World Cup qualifying. He's had much more support from the Thai FA than his foreign predecessors, regularly having the league break for 2 weeks ahead of international windows in order to prepare the team. Also, I believe that his status as a national footballing hero (most-capped Thai player, and 2nd top scorer), has seen fewer clubs withdraw players from international squads on flimsy pretexts, that happened under Bryan Robson, and especially during Winfried Schaefer's tenure. Kiatisuk's biggest success has been bringing on players he coached at U23 level, and promoting them rapidly into the senior team. They certainly seemed hungrier and keener to work for him than the older players he omitted.
Reservations:
A) apart from a 2nd place in the Thai Premier League in 2009, he's not really had any club success as a manager.
B) Like Choi, has a fair bit of 'mana' due to his own playing career, which means he has the respect of his current squad. However most, if not all, of the Nix squad wouldn't have heard of either him or Choi. Like Choi, comes from a fairly authoritarian culture, but unlike Choi has played and managed overseas (Vietnam, Singapore, England), so possibly more adaptable. On the plus side, has a pretty good command of English, so language wouldn't be an issue. (I don't know how well Choi speaks English)