1. Trap: Trap music originated in the early 2000s in the Southern United States and is characterized by repetitive drum patterns, dark and heavy bass lines, and lyrics that often focus on drug culture and street life. Artists like Gucci Mane, Future, Migos, and Travis Scott are notable figures in the trap scene.
2. Mumble rap: Mumble rap is a style of rap characterized by mumbled or indistinct vocals that can be difficult to understand. Artists like Lil Pump, Lil Yachty, and 6ix9ine are examples of popular mumble rappers.
3. Drill music: Drill music originated in Chicago in the early 2010s and is known for its aggressive, violent lyrics and dark, brooding beats. Chief Keef, Lil Durk, and Polo G are prominent figures in the drill scene.
4. SoundCloud rap: SoundCloud rap refers to a style of rap that emerged in the mid-2010s and gained popularity through online platforms like SoundCloud. Artists like XXXTentacion, Lil Peep, and Juice Wrld are known for their SoundCloud rap style.
5. Latin trap: Latin trap combines elements of trap music with Latin American rhythms and musical influences. Artists like Bad Bunny, J Balvin, and Ozuna are popular in this subgenre.
It's important to note that the term "hottest" or "trending" can be subjective and may change over time. Many other rap subgenres and styles exist, each with its own unique characteristics and fan base.