I was reading lately about the flow formed technique. A few manufacturers that use it is Rays, Enkei and Work.
A nice article related with cast, flow formed and forged wheels.
http://speed.academy/why-wheel-manuf...rating-matter/
A wheel I like is Work's M.C.O type CS, which is used in the 86/BRZ Gazoo races. Some wins here:
https://www.work-wheels.co.jp/en/top...ry/86brz_race/