It looks like you want wheels with some hard-edged, complex spoke designs. Never heard of Concaver, but it looks like they do have specs that approach “standard” 370z territory. Nothing aggressive though, from what I can see.
I could direct you to:
Gram lights 57FXZ
https://www.rayswheels.co.jp/product...en&wheel=57FXZ
Weds also has some angular designs in their Kranze and Maverick lineups but those are multi piece
https://www.weds.co.jp/english
Also check out Forgestar:
https://www.forgestar.com/wheels/