Here's a suggestion.
Think about why exactly you're riding a gravel bike.
If speed is of a high relevance, wear lycra.
If style is of a high importance, read fashion magazines and wear what's shown there.
For lycra I can highly recommend Assos. Well worth the price. There's gravel specific Assos stuff, but just go with the Millet series bibs and road jerseys. Jersey are tight and full aero

, don't matter how you look, enjoy the speed and lack of flapping fabric. Embrace what you love doing and the shapes of functional clothing that come with it.
I find rear pockets on not tight fitting jerseys to be rubbish for speedy offroad riding (risk of stuff hopping out of pockets when hopping roots etc).