Landscape: full manual
Controlled Portrait: aperture with manual ISO.
Weddings or general walk around: aperture with auto ISO, but I always set the min shutter speed depending on lens length, longer lenses I usual set a min shutter speed of 2x lens length, wider I'll set it to as low as 1x lens length.
High pixel dense cameras are too demanding I find to use the old adage of 1:1 focal length to min shutter speed, at least with anything over 50mm.
So for example if I'm using an 85mm for wedding casuals I usually set my slowest shutter speed to 160th or 200th of a sec, depending on lighting conditions.