The bane of most influencer marketers' existence tends to be centred around; one, the discovery and two, the authenticity of prospective influencers for partnerships.
In an effort to support both its creators and the brands relying on Instagram for business, the app seems to be testing an early-stage "creator portfolio" that can act as an instant media kit creators can use to pitch themselves.
Keep your eyes set on the rollout of an Instagram creator marketplace that will help facilitate the transactions and communications of upcoming new creator portfolios.