Help with seat map identification please.

My flight has just changed to an A350-900 with a seat layout that doesn't match any published by TG. It must be one of the leases.

It has 33 seats in a 1-2-1, with seat K missing on the front row, and both A and K missing on the back row.




From other threads it looks as though it must be either Collins Aerospace "Super Diamond" or a staggered layout of Stelia Aerospace "Solstys".

Is there any way to tell the difference?

Both look as though they will be fine for a 5 hour flight, but if I have the staggered layout I'd prefer a window seat close to the window instead of the ones closer to the aisle.

I can't find a map that shows me the seat offsets for the staggered layout.

This seat map ITA Airways A350-900 reverse herringbone looks like a possible match for the Super Diamond layout.
The closest I can find for the staggered Solstys layout is missing the rear 2 seats Iberia A350-900 staggered

Any tips?

Thanks
(No, I haven't got anything better to do than fiddle about with minor seat differences, thank you for asking!)