Del any of the pines, firs will have more creosote than hardwoods. And will burn faster, giving you less heat.
Alder, Birch, Poplar, are all pretty soft, not a lot of creosote about a tossup with the pines for heat. Good for starting the fire, and easy to split.
Oak, Ash, Elm are all top notch will give you the most heat for the least creosote buildup.
Ideally this summer you cut next winters fuel supply, cut, split, stack and dry it over the hot days of summer.