Not sure what you mean here— TG does not have a 20-row deep J cabin on any of its A359s. J on TG starts at row 11 (even if it is the first row on the aircraft) and skips row 13.
There are three configurations for A359s:
- J rows 11-18 staggered:
https://www.aerolopa.com/tg-359-1 (most common)
- J rows 11-21 reverse herringbone:
https://www.aerolopa.com/tg-359-2
- J rows 11-16 2-2-2 config:
https://www.aerolopa.com/tg-359-3