What size was the XL? Maruman makes a 12.2”x 16.5 landscape notebook.

They also make this A4 in landscape graph. Both are ring bound, though.

Life Noble makes a great non-ring A4 grid/graph but it isn’t landscape.

There’s also the A4 Apica CD graph — not landscape. The paper is incredibly smooth, which can be a plus or minus depending on your taste and preferred writing implement.