If we go according to years of formation then next is BSB🙏
Backstreet Boys (often abbreviated as BSB) are an American vical group, formed in Orlando, Florida in 1993. The group consists of Nick Carter, AJ McLean, Howie Dorough and cousins Brian Littrell and Kevin Richardson.

2019 Jan.... 2nd Jan itself was my exam 😒. Anyways 1 day I was talking to my mom while she was watching some interview. I asked her who those men in the interview were. She told they were Backstreet boys and they and few other bands were my mom's favorite artists of 90s. She told me after my exams she will tell me more about BSB. I agreed. Since exam stresses me out and I might forget.... I noted the name down on the calendar. Few days went by and I completely forgot about it. Suddenly one day I saw it on my calendar and reminded my mom who made me listen to few of their songs that day. The next day I was already researching on Backstreet boys. I loved them already. That is when 2 things surprised me. The day when my mom told me about BSB, was 9th Jan, which happened to be AJ's B'day and the day I heard their songs, which was the previous day, was 28th Jan, which happened to be Nick's Birthday. What coincidences right!!! Anyways that was the story.

What I love about BSB:
Of course the first and foremost the brotherhood they have. They have always had each other's back and have helped each other out of tough times. I admire how they love each other so much. This is the biggest reason for me to love BSB. Second, the way they portray the lotions in their songs is just wonderful. Third, they are down to earth. They stay true to who they were and never let success get into their heads. They also believe in 'Whatever bad happens, it happens to bring oit the good in you'.

The songs I love of BSB:
Are you seriously gonna make me choose?? Well I can't. I will go with my fav albums.
❣Black and Blue 🖤💙
❣In a World Like This

My fav BSB member:
Backstreet Boys 😂

To those who don't know BSB:
Check out their soothing music and heavenly brotherhood. They are old but they are gold. They are doing great with modern music too so if you think that BSB is old and not of your style listen to their DNA album for a clear cut idea.

THEN:

NOW:

*NOTE BSB WAS ACTUALLY A VOCAL GROUP AND NOT A BOYBAND*