The 3rd gen is the generation that got me into K-pop 💗. I think the standout artist from the 3rd generation is BTS, they were revolutionary for K-pop.
I also believe that the big three groups of the third gen (especially Twice, Blackpink, Red Velvet and Exo) were very strong and are groups that still hold a lot of power and influence.
Outside of BTS and the big three, the only other noteable groups I can think of are Mamamoo and Gfriend.
Overall, I think that the third gen lacked diversity factor in terms of acts debuted outside of the big three or BTS. This differed from the 2nd generation, and already the fourth generation is doing a better job at this.
I think the fourth generation already has a stronger lineup of girl groups and it has a lot of potential to top the third gen in the long run.
I guess we’ll have to see!
It’s definitely bittersweet saying goodbye to the era of the third generation 
