New fan here. Who's your ult group, and why?

So I've only been into kpop for around 7 months, and have given a listen to at least a few songs from a lot of groups, but I know I'm barely scratching the surface and most of what's going to be pushed is the current popular groups. I'm curious to know who your ult group is, and why (the songs, the image, the personalities, the performance etc) in the hopes it can lead me to some good groups!

My ult group is Stray Kids, and I intend to give every group a good faith listen to see how I feel about their music, so if you could also suggest a couple of your top songs by your ult that would be great!