How the zeydi school spread?
This moderate shi’i school barely survived until our time, there are a few people in Yemen who claim to be its followers.
Some Mujtahids whose views did not reach our time as a mazhab are the following:Ibn Shubrumah (74-144 H./693-761 M.) Ibn Abi Layla (74-148 H./693-765 M. )Awzai (88-157 H./707-774 M.) Sufyan Thawri (97- 161 H./715-778 M.) Lays Ibn Sa’d (94-175 H./701-788 M.) Sufyan Ibn Uyayna (107-98 H./725-813 M.) Ishaq Rahuya (161-238 H./777-852 M.) Abu Thawr (240 H./854 M.) Dawud b. Ali (Zahiri) (202- 270 H./817- 883 M.) Tabari (224-310 H./836-922 M.)
There are quite a few fiqh books that have gained respect and survived till this day:
Hanafî: Muhammad ash-Shaybani: “Zahiru’r-Riwaya”; Sarahsi “Mabsut”; Kasani “al-Bedayiu’s-Sanayi; Merginani “al-Hidaya”; Ibnu’l-Humam “Fathu’l-Qadir”; Ibn Nujaym “al-Bahru’r-Raik”; Ibn Abidin “Raddu’l-Mukhtar”
Maliki: Malik “al-Muwatta”; Asad b. Furat “al-Mudawwana”; Ibn Rushd “Bidayatu’l-mujtahid”; Karafi “al-Furuk”
Shafi’i: Imam Shafi’i “al-Umm”; Muzani “Mukhtasar”; Shirazi “al-Muhazzab”
Hanbali: Ibn Kudama “al-Mughni; Buhuti “Kashafu’l-Kina”; Ibn Taymiyya “al-Fatawa”
Source: Fiqh1 (According To The Maliki School Of Islamic Law), Erkam Publications