You should follow the recipe, the ingredients, the amounts, how to assemble, and how long to process, at what temperature. The university extension recipes are tried, tested, and true, for safety.
Some recipes call for a water bath boiling for a number of minutes. Some recipes can be lower temperature pasteurized. These are not mix and match.
If you are lucky enough to find identical recipes, for the process or assembly, the ingredients and amounts, and one says WB boiling 10 minutes and another one says WB low temperature for 30 minutes, then you do have a choice.