There are many styles of yoga. I have definitely not tried them all out, but here is a little of what I know of some styles:
Ashtanga
Ashtanga yoga literally means “eight-limbed yoga” and consists of following eight spiritual practices (yama, niyam, asana, pranayama, pratyahara, dharana, dhyana, samadhi). This yoga is considered to be very physically demanding. When practicing, the yogi flows through a series of poses, striving to learn to observe whatever arises inwardly or outwardly without holding on to it or rejecting it. The goal is for this practice of non-attachment to affect all aspects of one’s life.
Baptiste Power Vinyasa Flow
This practice uses physical yoga practice, meditation practice and active self-inquiry as tools of transformation. Participants are encouraged to reclaim their full potential, discover creativity, awaken passion, and create authenticity, confidence and new possibilities.
Bikram
This yoga practice is based on Hatha Yoga and is practiced through a 26 postures sequence in rooms heated to 105 degrees. You perform the same series of two breathing exercises and 26 poses in each class, 45 minutes of which are standing poses with the other 45 minutes of floor postures. The goal of Bikram yoga is to create a fit body and mind which will allow the physical self to unify with the spiritual self.
Ishta Yoga
Classes include alignment-based vinyasa sequences, with meditation, Pranayama (breathwork), and kriyas (cleansing techniques) to create specific energetic effects. ISHTA stands for the Integrated Science of Hatha, Tantra, and Ayurveda. Its aim is to balance the human organism to create a strong and stable platform for spiritual growth.
Iyengar Yoga
Iyengar Yoga has teaches how all the eight aspects of Astanga yoga are integrated. In this practice emphasis is placed on alignment and basic structure of each pose. The practice helps one gain good health, mental peace, emotional stability and intellectual clarity. The goal is to obtain a healthy body, clear mind and pure emotions, so the practitioner can learn to excel in all areas of his life.
Kripalu Yoga
Kripalu Yoga is a form of Hatha Yoga. Through asana, pranayama, meditation, and relaxation techniques, the yogi learns to observe the sensations in the body and mind to discover how well a pose, or a life decision, is serving them. Kripalu emphasizes following the flow of life-force energy, compassionate self-acceptance, and n0n-judgement, and taking what is learned into daily life. Classes can be physically demanding or extremely gentle.
Kundalini Yoga
A typical Kundalini class begins with chanting and ends with singing, and in between features asana, pranayama, and meditation designed to create a specific outcome. Breathing exercises may be challenging and include the rapid pranayama known as Breath of Fire, mini-meditations, mantras, mudras, and vigorous postures. Kundalini Yoga is sometimes called the Yoga of Awareness. It’s primary goal is to awaken kundalini energy, the psychoenergetic force that leads to spiritual elevation, and kick-start the process of transformation.
Sivananda Yoga
Sivananda Yoga is based on the teachings of Swami Sivananda. This yoga style is more of a spiritual practice than physical exercise. Classes focus on 12 core poses and Sanskrit chanting, breathing practices, meditation, and relaxation. Designed to transform and elevate human consciousness, Sivananda Yoga focuses on five fundamental points of yoga: proper exercise, proper breathing, proper relaxation, proper diet, and positive thinking and meditation.