Theravada ~ Abhidhamma ~ Vipassana (Mahāsi Sayādaw, ajahn Tong Sirimangalo line). Guide meditations and meditators.
(In conventional terms:) Answers and comments are mainly based on and rooted in (practical) experience, not theoretical knowledge. The bit of theory I do refer to will be from the Abhidhamma. Mostly because it can be experienced in practice.