mtl (most to least) in bnd to be sub/ dom. this will have two perspectives, daily life and intimacy.
sungho;
intimacy: he will definitely be a service dom, i don't make the rules!! he would treat you like a princess, with so much love and affection that you even get worried that if you ever break up you are going to be so empty and sad :( he would fuck you slowly yet deep, whispering love words in your ear before biting on it softly, everything being so personal and romantic that you would just feel that warm fuzzy feeling that would bring your orgasm after he tells you how good you are for him and his thrusts get sloppy before he comes crashing down.
daily life: idek how to put it but he'll be a mature simp??? like you are the only one in his eyes, he would blush and giggle whenever you said something to him or touched his hands with so much adoration, but he would also be very mature and you both will have your own space and serious conversations going on. so he's kinda of a sub.
jaehyun;
intimacy: a sub 99.99% of the times, he's so soft and subby that's actually crazy, he would love you to handle him and tell him how good he is. but beware of that 00.01% because the day he comes with the switch on and his dom side comes forward?? you are fucked up (quite literally) because he's unstoppable and his energy would show up while he fucks the shit out of you.
daily life: honestly i see him as a dom in the daily life, he would want to take care of things for you, guide you and teach you stuff, hold your hand and kiss it better when you are feeling nervous. he is such a good boyfriend for you.
riwoo;
intimacy: definitely a soft dom, the only reason he's a "dom" is because he's the one fucking you and sometimes he actually takes the lead. sex with riwoo will mostly be you riding him while you guys kissed or him fucking you from behind while you spooned, but he will always be so caring a lovely, only caring about how you're feeling even when he's getting lost himself and finishes abruptly.
daily life: he's just a submissive person overall, he would just nod and say yes to anything you propose, he won't go against you unless is a joke and honestly you guys have similar tastes so he doesn't really has a reason to be anything else but a subby pretty boyfie <3
taesan:
intimacy: i think it depends. taesan seems to me like a very romantic person, really into a serious relationship kinda boy, so i believe he would be a dom when needy and a soft dom when you need it. he would look over for you but also take care of himself sometimes, always reassuring you of how much he loved you.
daily life: a SUB. i'm so sorry but he is such a submissive boyfriend fr fr, he would hold your hand and only look at you, his straight face making him look like the bitchiest mf but shattering when you said something and he just sweetly laughed. i know he's a boy that loves to joke around and he will!! but his eyes will look for yours with everything he says, waiting for your reaction with anticipation and nerves eating him alive.
leehan:
intimacy: a dom 99% of the time. he would grab your hair, choke you, fuck you so hard you gotta cover your mouth to not alert the neighbours, he would mess you up a thousand times and still comeback for more. but that 1% is just him being a softie for you, just smiling and letting you do whatever you want with him, he wouldn't mind you doing whatever the fuck you wanted. he just loves you so much.
daily life: it's 50,50 for me, he would like to have control over some things but i also think he would pass the responsibilities over to you most of the time, just agreeing with anything that you decide.