Im no dermatologist... but
Ok, here is my take on the issue. These are much more prevalent as you suddenly ramp up on your mileage, and after slight position changes.
I have not found any type of crotch butter to work. I find that the better quality short that you get, the better off you are. Wear clean shorts and take the shorts off as soon as you can after your rides.
I think there are different types of saddle sores, chafing sores.. .and the bumps you have indicated. The bumps can be many things, but most often if you treat them right, they will go away on their own, but I have found that you will have a tendency to get them back in that same place. I treat mine a bit differently. I make sure to wash that area well, and sleep with boxers or nothing on. This sounds gross, but I either pop the lump like a pimple, or have my wife... who is a nurse lance it. This will release the fluid that is causing the pressure. I will immediately put some drying type agent on it... like some kind of astringent ... like something with salycitic acid, and then dry the area, then put an antibacterial agent on it... like neosporin for a few days until it clears up. With the neosporin, I am always able to train through the issue.
Take care of this as soon as possible... and try and address the positioning if that is the cause.... and try and identify whether it is a specific pair of shorts that is causing the issue. Cause if you dont nip it in the butt, it will continue to haunt you... and the surgery to remove it if it turns into a cyst is ugly. I had a fellow racer have that surgery this year to remove a recurring and painful saddle sore, not pretty.
Best of luck.