I'm not sure what the seats are but EI does an alternating 2-2, 1-1 on their 321LRs. Not a bad compromise between density and aisle access.
Originally Posted by
findark
B6 has a similar setup too, with 16 seats in Zone 1.
That's the Thompson Vantage. It's not a great seat. TP uses same on its new 321LR.