The MediaTek MT6735 is a 64-bit, quad-core chipset released around 2015, famously powering budget devices like the Samsung Galaxy J1 (2016), J2, J3 (various versions), and dozens of obscure regional brands (Ulefone, Doogee, Infinix).
Finding a custom ROM for this chipset is less about "choosing the best option" and more about survival. The scene is defined by a lack of official manufacturer support, the difficulty of the MediaTek flashing process, and the hardware limitations of a nearly decade-old processor. However, for the persistent user, the rewards are breathing new life into otherwise e-waste. mt6735 custom rom
Due to the MT6735 being common in devices with 1GB RAM, Android Go (Oreo, Pie, or 10 Go Editions) is the most popular custom ROM choice for this platform. The MediaTek MT6735 is a 64-bit, quad-core chipset
If you can find a working build of LineageOS (formerly CyanogenMod) for your specific MT6735 variant (e.g., j1xlte, j3lte), this is the best option. Due to the MT6735 being common in devices
RR is a classic. For MT6735, Android 10 builds are the "sweet spot" because hardware acceleration for the Mali-T720 is fully optimized.