[Lenovo P2 Guides, News, & Discussion] IshtaNoob:
The following list is a list of ROMs available on the "Lenovo P2 ROMs, Kernels, Recoveries, & Other Development" forum, structured as follows: ROM name (linked to the corresponding thread), developer (no link to avoid spamming), android version, ROM version, and date of the latest update I found.

ROMs that were removed or discontinued aren't in the list, as well as unofficial ROMs which have become official. I also didn't include some obsolete builds. Some abandoned ROMs are listed because it's some times possible to obtain them through other users.

There might be errors, there might be information missing, so let me know of corrections needed.

The layout sucks, I know, I couldn't do better.

AICP - Developer: degrus - Android 10 - ROM Version: 15 - Latest update: 2020-06-08

AICP - Developer: ruturajjena - Android 8 - ROM Version: 13.1 - Latest update: 2018-07-23

AICP - Developer: abhayruparel - Android 7 - ROM Version: 12.1 - Latest update: 2017-12-27

AIM - Developer: arghyac35 - Android 8 - ROM Version: 3.1 - Latest update: 2018-01-09

AIM - Developer: arghyac35 - Android 7 - ROM Version: 2.5 - Latest update: 2017-12-13

AOKP - Developer: ruturajjena - Android 8 - ROM Version: ? - Latest update: 2018-05-18

AOKP - Developer: BabluS - Android 7 - ROM Version: ? - Latest update: 2018-02-19

AOSiP (Derp) - Developer: Subham - Android 8 - ROM Version: ? - Latest update: 2018-06-18

AOSiP (Derp) - Developer: BabluS - Android 8 - ROM Version: ? - Latest update: 2018-01-10

AOSiP DerpFest - Developer: Shades_of_death0 - Android 10 - ROM Version: ? - Latest update: 2020-05-04

AOSiP DerpFest - Developer: degrus - Android 10 - ROM Version: ? - Latest update: 2020-02-16

AospExtended - Developer: degrus - Android 10 - ROM Version: 7.1 - Latest update: 2020-04-16

AospExtended - Developer: darshan1205 - Android 9 - ROM Version: 6.7 - Latest update: 2019-08-28

AospExtended - Developer: Subham - Android 9 - ROM Version: 6.1 - Latest update: Abandoned

AospExtended - Developer: arghyac35 - Android 8 - ROM Version: 5.8 - Latest update: 2018-11-08

AospExtended - Developer: FireLord - Android 8 - ROM Version: 5.0 - Latest update: 2017-10-08

AospExtended - Developer: Subham - Android 7 - ROM Version: 4.6 - Latest update: 2017-10-21

Arrow - Developer: degrus - Android 10 - ROM Version: 10 - Latest update: 2019-10-10

Atomic OS - Developer: arghyac35 - Android 7 - ROM Version: 1.5 - Latest update: 2017-10-09

Atomic OS - Developer: Rk585 - Android 7 - ROM Version: 1.5 - Latest update: 2017-08-09

Bootleggers - Developer: Fullbustah - Android 10 - ROM Version: 4.7 - Latest update: Abandoned

Bootleggers - Developer: Fullbustah - Android 9 - ROM Version: 4.2 - Latest update: Abandoned

Bootleggers - Developer: b50corei5 - Android 8 - ROM Version: 3.0 - Latest update: 2018-08-27

Candy - Developer: b50corei5 - Android 8 - ROM Version: 8.1 - Latest update: 2018-07-19

Cardinal AOSP - Developer: Subham - Android 8 - ROM Version: 5.7 - Latest update: 2018-07-21

Colt OS - Developer: Sohit5s - Android 9 - ROM Version: 4.6 - Latest update: 2019-09-02

Colt OS - Developer: EypCnn - Android 7 - ROM Version: 1.1 - Latest update: 2017-08-16

Colt OS - Developer: arghyac35 - Android 7 - ROM Version: 1.4 - Latest update: 2017-12-08

Cosmic OS - Developer: BabluS - Android 8 - ROM Version: 3.1 - Latest update: 2018-01-14

Cosmic OS - Developer: BabluS - Android 7 - ROM Version: 2.1 - Latest update: 2018-01-06

crDroid - Developer: degrus - Android 10 - ROM Version: 6.0 - Latest update: 2019-12-19

crDroid - Developer: saikiran001 - Android 9 - ROM Version: 5.3 - Latest update: 2019-04-19

crDroid - Developer: ruturajjena - Android 8 - ROM Version: 4.6 - Latest update: 2018-08-22

Cypher OS - Developer: arghyac35 - Android 7 - ROM Version: 4.1.2 - Latest update: 2017-10-09

DarkNess reDefined - Developer: arghyac35 - Android 7 - ROM Version: 2.1 - Latest update: 2017-10-07

DarkNess reDefined - Developer: Rk585 - Android 7 - ROM Version: 2.1 - Latest update: 2017-08-15

Dot OS - Developer: b50corei5 - Android 8 - ROM Version: 2.2 - Latest update: 2018-07-23

Evolution X - Developer: Shades_of_death0 - Android 10 - ROM Version: 4.2 - Latest update: 2020-04-08

Evolution X - Developer: Sohit5s - Android 9 - ROM Version: 2.1 - Latest update: 2019-09-08

Evolution X 4.3 Undisputed - Developer: Shades_of_death0 - Android 10 - ROM Version: 4.3 - Latest update: 2020-05-28

FireHound - Developer: b50corei5 - Android 8 - ROM Version: 4.7 - Latest update: 2018-07-10

Flyme - Developer: EypCnn - Android 6 - ROM Version: 6 - Latest update: 2017-08-15

FrankenRom - Developer: ruturajjena - Android 8 - ROM Version: 13.0 - Latest update: 2018-05-09

Havoc OS - Developer: VladSor - Android 10 - ROM Version: 3.5 - Latest update: 2020-05-08

Havoc OS - Developer: degrus - Android 10 - ROM Version: 3.0 - Latest update: 2019-12-21

Havoc OS - Developer: advaithbhat - Android 9 - ROM Version: 2.2 - Latest update: 2019-02-19

Havoc OS - Developer: Advaith99 - Android 8 - ROM Version: ? - Latest update: 2018-09-20

ION - Developer: degrus - Android 10 - ROM Version: 2.0.B - Latest update: 2019-10-25

LegendROM - Developer: abhayruparel - Android 7 - ROM Version: 19.0 - Latest update: 2017-11-27

LegendROM - Developer: Rk585 - Android 7 - ROM Version: N - Latest update: 2017-08-30

LineageOS - Developer: mikeioannina - Android 10 - ROM Version: 17.1 - Latest update: 2020-06-14

LineageOS - Developer: mikeioannina - Android 9 - ROM Version: 16 - Latest update: 2020-04-19

Liquid Remix - Developer: ruturajjena - Android 8 - ROM Version: 9.1.5 - Latest update: 2018-08-28

MIUI - Developer: venu44 (OP) - Android 7 - ROM Version: 10 - Latest update: 2019-06-09

MIUI - Developer: Kybyak - Android 7 - ROM Version: 10 - Latest update: 2018-07-18

MIUI - Developer: Kybyak - Android 7 - ROM Version: 11 - Latest update: 2020-04-13

Mokee - Developer: alirazaagha (OP) - Android 10 - ROM Version: MK100 - Latest update: 2020-06-16

Mokee - Developer: suvam69 (OP) - Android 9 - ROM Version: MK90 - Latest update: 2020-05-17

MSM Xtended - Developer: VladSor - Android 10 - ROM Version: 10 - Latest update: 2020-06-14

MSM Xtended - Developer: 911-Future_Maker - Android 9 - ROM Version: XP7 Release v14 - Latest update: Abandoned

MSM Xtended - Developer: PriyeshP - Android 8 - ROM Version: 9.5 - Latest update: 2018-07-23

OctOS - Developer: abhayruparel - Android 7 - ROM Version: ? - Latest update: 2017-10-26

Pixel Experience - Developer: degrus - Android 10 - ROM Version: Q - Latest update: 2019-11-08

Pixel Experience - Developer: Sohit5s - Android 9 - ROM Version: Plus Edition - Latest update: 2019-09-01

PixysOS - Developer: degrus - Android 10 - ROM Version: 3.0.4 - Latest update: 2020-04-16

Poly OS - Developer: BabluS - Android 7 - ROM Version: 1.0 - Latest update: 2017-12-09

POSP - Developer: Shades_of_death0 - Android 10 - ROM Version: 3.1.7+12 - Latest update: 2020-04-25

POSP - Developer: Fullbustah - Android 9 - ROM Version: 2.3 - Latest update: 2019-02-13

Resurrection Remix - Developer: Abhi8232 (OP) - Android 9 - ROM Version: 7.0.2 - Latest update: 2019-06-07

Resurrection Remix - Developer: Fullbustah - Android 8 - ROM Version: 6.2.1 - Latest update: 2019-01-20

Resurrection Remix - Developer: CodeElixir - Android 8 - ROM Version: 6.0 - Latest update: 2018-06-03

Resurrection Remix - Developer: PriyeshP - Android 8 - ROM Version: 6.1.0 - Latest update: 2018-07-09

Resurrection Remix - Developer: Pranay 7 - Android 8 - ROM Version: 6.0.0 - Latest update: 2018-03-11

Resurrection Remix - Developer: Pranay 7 - Android 7 - ROM Version: 5.8.5 - Latest update: 2017-12-13

Resurrection Remix - Developer: Rk585 - Android 7 - ROM Version: 5.8.4 - Latest update: 2017-09-24

Revenge OS - Developer: degrus - Android 10 - ROM Version: 3.0 - Latest update: 2019-10-09

Stock (deodexed) - Developer: hendibudi - Android 6 & 7 - ROM Version: S62 & S244 - Latest update: 2017-08-17

Stock (odexed) - Developer: abhayruparel - Android 6 & 7 & 8 (?) - ROM Version: S232, S233, S244, S251 - Latest update: 2017-08-23

SudaMod - Developer: shi-guang - Android 8 - ROM Version: 81.0 - Latest update: 2018-06-18

SuperiorOS - Developer: saikiran001 - Android 9 - ROM Version: ? - Latest update: 2019-07-04

Syberia - Developer: degrus - Android 10 - ROM Version: 3.0 - Latest update: 2019-10-12

Syberia - Developer: VladSor - Android 9 - ROM Version: 2.9 - Latest update: Abandoned

Validus - Developer: abhayruparel - Android 8 - ROM Version: 1.0 - Latest update: 2018-01-09

ViperOS - Developer: Sohit5s - Android 9 - ROM Version: 6.7 - Latest update: 2019-08-21

ViperOS - Developer: BabluS - Android 7 - ROM Version: 3.1.1 - Latest update: 2018-04-14

ViperOS - Developer: arghyac35 - Android 7 - ROM Version: 3.1.1 - Latest update: 2017-11-13

XenonHD - Developer: EypCnn - Android 7 - ROM Version: 7.1 - Latest update: 2017-08-14

XOSP - Developer: matteo0026 - Android 7 - ROM Version: ? - Latest update: 2017-12-12