What category of beer is this? Any tips?

The real answer is to call it a “very light tasting enjoyable beer, spicy, very aromatic, and warm with a kick.”  For competition purposes though my vote would be for 21A, if it’s obvious that the spicy character comes from spice and not just hops/yeast.  Cat 22 is for smoke beer or wood aged beer.  Cat 23 (specialty), if you can’t see it working in Cat 21A.  cheers, j