As I currently live on a sail boat I have a little experience with this. It has 11,000 lbs of lead weight hanging below it and it is a semi circle width wise and long and slender fore and aft. Generally it is very resistant to sideways motion or heeling, as long as they aren’t breaking 10 to 15’ waves are no big deal. On the other hand going bow first into a 15’ wave can literally launch you into the air if you are at either end.
Swells are the same, I don’t even notice quite large swells if I am sideways to them, going through them is an entirely different matter. The very worst designs are Trawlers, Tugs and barges and the ocean going versions all have rounded bottoms as compared to the shallow water versions. There is a caveat, size matters, wave height a third or less of freeboard is generally not noticeable unless it sets off an oscillation.
One more possibly interesting observation, running the anchor rode to the keel as opposed to the bow provides a wonderful anchorage as long as the boat doesn’t hunt or go sideways to the wind and waves. My boat hunts which means in a blow it goes to port and heels way over putting a lot of strain on the ground tackle and then it tacks to starboard and again heels way over. The cure is to put the engine in reverse and straighten everything out, it even lessens the strain on the anchoring system.
The instinctive response to engage the engine in the forward position to lesson the strain invariably increases the tension on the system because the rudder simply doesn’t work well at slow speeds and the boat will hunt worse. . .
Heaving to out in the ocean is a lot better than being anchored and it generally puts the boat sideways to the wind and waves and is very calm and relaxing, it is what we do when we are tired of fighting the storm, or the wife just wants to make a hot meal, or we just want a good nights sleep.
Bobbing up and down is by far the best way to deal with waves and the heavier the boat the better but only if the weight is in the right location, amidships. Weight at either end magnifies the effects of wave action.