According to this articles in theqoo the rank is as following:
1st Taehyung (Bangtan Boys)
2nd Jungkook (Bangtan Boys)
3rd Jimin (Bangtan Boys)
4th G-Dragon (Bigbang) - no doubt he's king of idols, at least in Korea
6th Byun Baek-hyun (exo)
7th Suga (Bangtan Boys)
11th Haechan (NCT)
12th Jonghyun (Shinee)
13th Kyuhyun (Super Junior) - shocked he's there but not heechul, guess his music is bigger than Heechul's variety shows?
14th RM (BTS)
15th J-HOPE (BTS)
16th D.O (EXO) - kinda surprised he's the only exo member besides BBH
17th Hyunjin (Stray Kids)
18th Doyoung (NCT)
19th Taeyong (NCT)
21st Jaemin (NCT)
22nd Mark (NCT)
23rd Minkyu (Seventeen)
24th Rowoon (SF9) - used to put him together with Chani and Bomin but now I'm sure he's far ahead them, probably second Eunwoo
25th Juyeon (The Boyz) - So far it seems the It Boy for 4th gen is indeed him
26th Jeno (NCT)
27th Jungwoo (NCT)
28th Minho (Shinee)
29th Key (Shinee)
30th Kim Yohan (Wei) - I see some produce hype is still there
....
The usual names in the top but it's nice to see 2nd gen with SHINee/Suju/BB up there, and many nct members ranking despite 127 having zero activities in Korea and Dream just coming back a few weeks ago.
I think some names trended more due to controversies but the full list is very accurate when it comes to bgs popularity.