AsreiAny from the Clear, Elegia, Stellia, or Elear. Wouldn't recommend any of them, though - Focal's cables are stiff as hell. Just get a custom dual 3.5mm cable.
bdingYea if it’s just dual 3.5mm then this will do. Same as the HE 4XX.
NEW NEOMUSICIA Replacement Cable Compatible with Hifiman HE4XX, HE-400i (The Latest Version with Both 3.5mm Plug) Headphones 3.5mm / 6.35mm to Dual 3.5mm Jack Male Cord 3meters/9.9ft https://www.amazon.com/dp/B07H6SPVX5/ref=cm_sw_r_cp_api_i_R.0kFb8GV25J4
hks128I found a good cable. Since I know there are probably those interested in the cable type it was one of the more expensive cables. However, the build quality of this cable is solid and it performs really well. I expect it to last for years to come.
The cable I bought was the Blue Dragon from Moon Audio.