There are many different types of Ranges there is the basic ones you can find nearly everywhere then there are other less common ones that come in different forms. These include spits cooked on a fire using an iron spit and a lit fire, these can be found in places like the Ogre plateau. Other forms include normal contructed fires with some wood and a tinder box that can be created anywhere.
There are also places likeTzHaar City where you can cook food on Sulphur vents.
However useful these other forms of cooking are the best is by far on a range because you are less likely to burn food this way and also they are unlimited.