I have addressed some pretty rough looking wood stocks over the years and have experimented with many different methods. Some are gentle, some are pretty drastic. It all depends on the situation.
A nice old rifle for which you want to give some TLC is not something for experimentation with cleaners.
Oven cleaner is great for cleaning metal, but as its intended purpose is to attack oils and grease, it will actually attack the bond between the wood fibres. No matter how well you rinse it with clean water, residue will remain in the wood. Some brands of oven cleaner (they are not all the same formula) can actually leave the wood with a green tinge due to chemical action. It will also remove patina so beware. Best to leave that one alone.
Steam works well and does lift dents. It also lifts 'whiskers' and raises grain. What was once a smooth well worn surface will start to look and feel like a chunk of split firewood. The surface can be burnished with a bone and oil, but you are making work for yourself when there are gentler less intrusive methods.
Genuine turpentine or its synthetic substitute, mineral spirits, wont raise the grain and is gentle. Apply with a soft cloth and work a small area at a time, wiping clean with another soft cloth often.
50/50 mix of raw linseed oil and turpentine is my go to, I have a bottle of it ready to go at my bench.
Some collectors of high end antiques swear by a product line called 'Kramers'. If they would use it on a $10k antique, it probably would be ok for an old Winchester.
https://kramerize.com/introduction.htm