Ana actually provides a lot of info online (though I'm not sure if any have been refurbished with new seats/layout after being in service)
https://www.ana.co.jp/en/us/internat...7_300er_1.html
shows 264 and new 212 is 3-3-3
250 and old 212 is 2-4-3
https://www.ana.co.jp/en/us/servicei.../guide/y/seat/
Shows 264 is recliner, 250 and old 212 is shell, new 212 is slim recliner