SARK2 45. Should be able to find it under EAA pistols. 14 +1 capacity. Hefty hunk of metal. Fun to shoot. I own both it and the FN. they are both pretty sweet. The FN does have the rounded bottom on the mags which can be a little awkward and the SAR is significantly more comfortable but heavier as well as it is an all metal frame.

The FNX 45 is as high as it goes. Some double stack 1911s get close, but those seem to have feeding issues a lot of the time.

The para 14 has a 14+1 capacity. I believe the FNX will hold 15+1 with the slightly extended magazine. Those are the two of which I am aware, when considering a handgun one can conceivably carry. Of course the Thompson uses 100 round drums.