Wheee Yippee!
Confidence/lucky guesses I don't think hv anything to do with it, I recognise some n deduce the rest by reason/similarity/thinking of facial/vibe~soft or sharp features - also im an artist n I studied charcoal/pencil portrait drawing n human head sculpture(tho I prefer/leaned more into abstract/post modern sculpture but dropped out) n I wanted to be a comics artist since young; im old now. So I see faces in my own way(I can identify/recognise easily SNSD, after some time watching/looking; Twice, fx, RV(almost immediately or quick-i did watch running man with joy in it n OT5 before I rlly followed kpop which was 2018. I started watching shortly before tat either 2016 or 2017 or 2015 dont rmbr), BP, Gfriend, everglow, oh my girl, gidle, aespa, IVE, WJSN(took longest n even now China members r difficult to recognise/identify), itzy(rlly easy even tho i dont stan but i rlly love chaeryeong), nmixx, izone is difficult as I hv trouble - hyewon, nako, minju - cos I dint watch pd48 or any/much izone content tho I watched some stages before they closed shop. But almost all above I consumed lots of content except wjsn cos I felt too much from them since beginning to ingest(itzy/nmixx less so too). OMG also but I still watched/followed a lot especially yooA n Arin(non group, tho there's little I think but I tried even where there's 1 fishing show without eng subs tat I just tried to watch psychically following, just enjoying the fishing without fully grasping nuance or details LOL.
I also consumed a lot of no-kpop/or a little kpop-related shows like Amazing Saturday, Delicious Rendezvous, Knowing Bros, Happy together(only limited number before it hot cancelled), limited omniscient interfering manager, return of Superman, the show w/Kim Jong kook n his/celeb's moms n a few others within 2017/2018 onwards but less since around 2020 n forwards. After a hour show or more I tend to recognise or identifiability sticks with me. If I watched a whole show of BM on knowing bros or running man or how do yoo play(newish variety show w/yoo jae suk n others-rotating/non repeating (mostly) guests I might get faster n graduate from training session but I hv no compulsion to watch as I don't stan BM n I'm mostly only slightly interested in Ahyeon but not enuf to watch even Ahyeon as guest on any show. If they(any BM) appeared on Amazing Saturday or Knowing Bros or running man I might watch but so far idk if they hv/I'm not tempted to find out.
All of which is to say L to R:
Pharita, Ahyeon, Chiquita(all 3 im 100% sure), Rora(only 25% sure as from this angle I could believe its any of other 3😁 LOL)