EBT = early buddhist teachings
LBT = late buddhist teachings, such as Visuddhimagga, medieval and late period Abhidhamma
Ṭhānissaro Bhikkhu (Geoffrey DeGraff)
🔗watmetta.org: his monastery in southern california.
(Frankk: I've read most of his writings, stayed at his monastery, listened to many of his talks, interacted with him, asked challenging questions, and always came away impressed.
|See his book "beyond mindfulness in plain english", much details on jhana in there.|
Avoid his old books where he still followed LBT redefinition of jhana.
(Frankk: I've never met him in person, but from reading his books, especially 'beyond mindfulness in plain English [goes into detail on 4 jhānas]', it's clear he's a skilled meditator and his views on jhāna as they evolved from his earlier LBT views, are coherent and congruent with EBT now.)
Especially the 6 talks titled jhana(1)... jhana(6).
(Frankk: I've never met him, have only read a little bit of his material, but the 6 talks on jhāna linked above seem to be in line with EBT suttas)
Early Buddhist Meditation: The Four Jhānas as the Actualization of Insight
She has a Phd in Buddhist Philosophy, teaches Buddhism and Psychology at a University, translated some Pāḷi suttas into Hebrew, as well as teaching Buddhist meditation and doing 2 months of solitary retreat every year.
(Frankk: I've never met her, but I highly recommend her book. The book is expensive, but here she wrote a free short summary: PDF essay-link )