Golden rule. There are approximately 10 000 backside types to each type of saddle in production.
In the days when I rode an upright I must have tried 20 different saddles including the supposedly ultimate Brooks B17! The Brooks* was true suffering, the like of which I'd not want to go through again, the 1000 miles I rode on it are the worst miles of my cycling life. I eventually found a Specialised saddle which was comfortable and immediately bought another 6, one for each of my other bikes. I must have clocked up 10s of thousands of miles on MTBs Folders and a Thorn Club Tour on those saddles and never did the saddle give me a moment's pain on any bike.
* Others swear by the legendary B17, my recommendations if you are even saddled** with one, is to soak it in a solvent like a high quality petrol for a day or two. Then set fire to it!
**Pun intended, sorry!