Probably you want both but your training will be subtly different if you choose one type.
The Hollywood 6 pack ab type are made for the aesthetic appeal. You would fit perfectly on a GQ magazine as a lean muscular model, which would make Bruno proud.
Most people would want the above but the" Strong as Steel" Abs can be just as attractive but more functionally needed, like in a Mixed Martial Arts (MMA) battle
We all have a 6 pack but you just can't see it underneath all that body fat.
So you need to drop body fat.
The best way is to ensure you have the best nutrition you could follow.
This means eating natural unprocessed whole foods, mainly plant based, very lean meats.
Drinking lots of water and teas and staying away from sugar.
Once your body fat is low enough (males about 10%, females about 15%) you will start seeing a defined set of abdominals.
Your exercises are simply heavy weighted stabilization type.
Squats, deadlifts, standing lifts, you wont need to do many situps or abs focused movements.
Diet will be enough to shrink wrap your abs around the stomach.
If your goal is to get into the ring, like boxing or mixed martial arts (MMA) then you will need a gut that will help get you out of trouble.
Fighting abs of steel are needed to take a punch otherwise you will be going down very quickly.
In MMA, grappling is common so lots of twisting and turns are done get out holds or to get a positional advantage.
The conditioning for these type of abs will be high volume, high work loads with repetitive functional maneuvers.
Your exercises will be lot of weighted crunches, kicking, planks and going to failure many times.
Able to take impacts thrown by your opponent from their hands, feet or from any body part is essential.
Doing situps and being hit with a boxing pad is a favorite in some martial arts.
Whatever approach you take, building your core provides many other health advantages for every day life
