4 aircraft and 4 cabin layouts, from the DHC-6 Twin Otter to the 72-600. Pick one for its seat map, the best seats and the seats to avoid.
There are seat maps for 4 Loganair aircraft here: the ATR 42-500, the ATR 72-600, the DHC-6 Twin Otter and the Embraer 145.
The ATR 72-600, with 72 seats: 72 Economy in its main layout.
The ATR 42-500, with 30" of seat pitch in Economy and seats 17" wide.