Great photo collection of Burt Rutan-designed planes by Flying Magazine.
He favored composites since he could mfg. prototypes almost 10x faster than metal or wood.
Northrop Grumman bought his company, Scaled Composites. This is his Firebird H03 Observation plane.
All of his designs appear to be subsonic, which allows non-exotic composites to be used in wing and fuselage design without concern for high skin temperatures.
(SpaceX just replaced carbon fiber with stainless steel in their “Starship” vehicle for that reason. I’m not sure how they went down that blind alley, in 2018 no less.)
One of the nice things about composites is that they’re hail-resistant (small hailstones just rebound) unlike painted aluminum. However, it takes discipline to realize weight savings over metal, and long-term maintenance of composites is still an open question.