Could someone provide a list of all Buddhist schools? If someone could provide a list of all Buddhist schools (both extinct and extant) it would be much appreciated. If this is unmanageable due to the high number, major schools would be good, or a link to such a list would be great. Thank you
Out of thousands schools, sub-schools, and hybrids, here are some of the most notable outlines:

Early Buddhism and conservative descendants


=======Popular wing=======


Mahasanghika (developed into Mahayana)


Gokulika (in Varanasi/Pataliputra)


Bahusrutiya (in Kosala)


Satyasiddhi / Tattvasiddhi (Chinese, extinct)


Jojitsu (Japanese)


Prajnaptivada (in Magadha)

Lokottaravada
Caitika

Pudgalavada heresy (extinct)


Vatsiputriya (extinct)


Sanmitiya (extinct)



=======Conservative center=======


Tamraparniya (the Sri Lanka offshoot)


Theravada

Mahisasaka (absorbed into Theravada)
Dharmaguptaka (in Gandhara, extinct)


Ritsu (Japanese)


=======Abhidharma wing=======


Sarvastivada (in Gandhara, extinct)


Vaibhashika (extinct)
Sautrantika (developed into Yogacara)
Kusha (Japanese, extinct)




Mahayana


=======Prajnaparamita / emptiness group=======


Yogacara line


Faxiang (Chinese)
Hosso (Japanese)

Madhyamaka line


Tibetan family


Kadam (extinct)


Gelug (Dalai Lama's school)

Sakya

Sanlun (Chinese, extinct)


Sanron (Japanese, extinct)


Chan (Chinese)


Zen (Japanese)


Soto
Rinzai


Fuke (extinct)

Obaku

Seon (Korean)


Jogye / Chogye (my Zen Master's school)

Thien (Vietnamese)


=======Tantric group=======


Tibetan tantra


Nyingma


Aro gTér

Kagyu


Karma-Kagyu (Chogyam Trungpa's school)

New Kadampa (Gelug breakaway)

Tangmi (Chinese)


Shingon (Japanese)


=======Sincretic group=======


Bon-Nyingma hybrid (Tibetan)
Shugendo (Japanese)
Ari Gaing (Burma, extinct)
Newar (Nepal)

=======Popular wing / Ekayana=======


Pure Land / Amitabha line


Jodo (Japanese)
Yuzu Nembutsu (Japanese)

Lotus Sutra line


Tiantai (Chinese)


Cheontae (Korean)
Tendai (Japanese)
Nichiren (Japanese)


Nipponzan-Myohoji (my first encounter with Buddhism)



Avatamsaka Sutra line


Huayan (Chinese)


Kegon (Japanese)
Hwaeom (Korean, subsumed by Seon)