I flew this configuration recently (and got bumped out of row 16 MCE, which does not exist). It is based on
SeatGuru V3, with the following differences:
J = Rows 1-5 + 7-10 as in V3, but all forward-facing B/E Aerospace J Seats.
MCE = Rows 13-15 in 2+3+2 configuration, with extra width between seats, similar to Domestic First, and larger AVOD screens on seatbacks.
Row 16 is gone! Replaced by a bulkhead aft of MCE section.
Y = Row 17 in 2+4+2 configuration with extra legroom before the bulkhead, but standard width between seats, AVOD screens in armrests.
Y = Row 18+ in 3+4+3 configuration as shown in V3.