Sukhoi T10 project branches:
Su-27S/P
Su-27SK chinese J-11 chinese J-11B
Su-27K (Su-33) Su-27KUB (Su-33UB)
Su-27M (Su-35) Su-37
Su-27SMK Su-30KI Su-27SM
Su-27SM2 (Su-35)
Su-27UB Su-27UBM
Su-27UBK chinese JJ-11
Su-27PU (Su-30)
Su-30K India
Su-30M
Su-30MK
Su-30MKK
Su-30MKK China
Su-30MK2 (Su-30MKK2)
China
Vietnam
Venezuela
Indonesia
Su-30MK3 (Su-30MKK3)
Su-30MKK Indonesia
Su-30MKI
Su-30MKI India indian HAL Su-30MKI
Su-30MKA Algeria
Su-30MKM Malaysia
Su-30M2 (Su-30KN)
Su-30M3 Su-35UB
Su-27IB Su-32FN Su-32
Russian special units:
LII (Gromov Flight Research Institute) and Test Pilots team @ Zhukovsky
TsPAT (Aircraft Equipment Demonstration Centre) and Russian Knights team @ Kubinka)