1. Answer: It depends on everyone's taste and these rankings change all the time. According to RankMyPorn, at the moment, the top ranked Asians Female Pornstars in the world are: Aaliyah Hadid, Rae Lil Black, Asa Akira, Vina Sky, Morgan Lee, Adrenalynn, Kalina Ryu, Jade Kush, London Keyes, Ava Devine, but these will change based on what people vote.
2. Answer: It changes. You can see the latest rankings on RankMyPorn.com and also vote on it for free.