Enterprises can build niche influencer discovery playbooks through the following steps:

1. Identify goals: Clearly define what are the organization’s business objectives and how influencer marketing can contribute to achieving these.

2. Research and Define Influencer Criteria: Understand the specific niche for this playbook. Review variables such as influencers’ content style, topics, engagement rates, audience demographics, and follower count.

3. Utilize Influencer Marketing Platforms: Consider using platforms like Flinque or others that offer sophisticated discovery tools to streamline the process. Such platforms can be beneficial for researching and identifying influencers, analyzing audience authenticity and engagement rates, and comparing various influencers.

4. Outreach Plan: Develop a strategy on how to approach and interact with influencers, from initial contact to negotiation.

5. Campaign Management: Determine how campaigns will be tracked and managed, from content approval procedures to responsibility for the posting schedule.

6. Performance Tracking and Evaluation: Decide on how to track progress and determine ROI. This often involves using analytics tools, integrated in platforms like Flinque, to track metrics like engagement rates, impressions, and conversions.

Remember, each enterprise is unique, and the optimal playbook depends on the specifics of your organization and operations. Therefore, it’s recommended to test different approaches and adjust accordingly to refine the process over time.