This substance shader let's you create a varied burnt wood maps. There is the randomize option and there is a slider for the fireglow. The example turntable uses the exported maps 4k from substance player but you can create your own or use the substance shader. The render is made using EEVEE next in Blender.
As always, you can use Adobe’s free Substance Player to export custom versions of the textures or to generate different patterns to suit your needs.
You can download the Player here: https://helpx.adobe.com/substance-3d-player/home.html
Included are the following;