i took buspar for awhile for my anxiety (vomitted every morning, couldn't sleep, etc...) but it typically left more loopy than if i just ripped my bong all morning. so i just stopped using the pills and upped my thc intake. played a beneficial part in me getting my license! that and chronic shoulder pain.
really strong sativa strains i personally like, cause it helps me be a little bit more energetic and productive. but i definitely recommend having a nice sativa/indica blend for more of an anti-anxiety effect. too strong of indica will prob leave you couch-locked. which will prob just make you more anti-social that relieve your anxiety issues.
if you do get your license, the caregivers/dispensaries are typically great about being able to find a strain that helps you out.
if none of that helps, check this dude's thread out:
https://www.rollitup.org/medical-marijuana/18304-disease-specific-mmj-strain-list.html