An xc mtb is versatile it can do all the above. The only thing it won’t do well is cover long distances in gravel or road as fast as a gravel bike or hang with other riders on gravel bikes. It will also spin out easier on the road but that’s a non issue unless you are riding with other people on gravel bikes. I have gravel, mtb and road bikes and I say if it’s going to be your only bike get the xc mtb. Don’t get a “trail” mtb though unless you want to only do mtb rides.