I recommend only teachers with whom I've had direct engagement. The following teachers are across a spectrum of traditions: Non-dual Shaiva Tantra, Kashmir Shaivism, Advaita Vedanta, the Direct Path, and Kundalini Maha Yoga.
Hareesh Wallis
Rupert Spira
Francis Lucille
Swami Viditatmananda
Carol Whitfield
Paul Ortega-Mueller
Adyashanti
Anandi Ma
They are all the "real-deal."
Not all of these individuals have been my teachers, but I've had enough direct engagement with all of them to recommend them with confidence.
"Tantra Illuminated", "The Recognition Sutra's", and "Near Enemies of the Truth"; Hareesh Wallis
"End of Your World", and "Path to Liberation"; Adyashanti
"This House is on Fire", and "Shakti"; Anandi Ma
"Know Yourself"; Ibn 'Arabi
"The Essential Rumi"; Translated by Coleman Barks
"The Gift", Poems by Hafiz; Translated by Daniel Ladinsky
"Rilke's Elegies", with particular attention to the 1st Elegy; R.M Rilke
"Leaves of Grass", with particular attention to the poems "Song of Myself" and "To You"; Walt Whitman
"The Cloud of Unknowing, Unknown Monk
Writings from additional teachers who have passed: Sri Nisargadatta, Sri Ramana Maharshi, Sri Atmananda Krishna Menon, Swami Dayananda Saraswati, Swami Lakshmanjoo, Bernadette Roberts, Teresa D'Avila, Hildegard of Bingen