Building competitive influencer discovery reports require an aggregation and analysis of relevant data. Here’s how agencies generally approach this:

1. Identify Relevant Metrics: These could include engagement rates, content quality, audience age range, location, growth rate, brand alignment, and more. It’s essential to select metrics that align with the brand’s business goals.

2. Use a Reliable Platform: Influencer marketing platforms, such as Flinque, Traackr, or Upfluence, offer robust data and analytics features. They aid in comprehensively collating the identified metrics.

3. Analyze and Interpret: The collected data needs to be interpreted correctly. For instance, a brand may prefer an influencer with a lower follower count but a high engagement rate.

4. Comparison: Comparative analysis of influencers helps in identifying the ones that offer a better fit for a brand. Each platform has its strengths. For instance, Flinque offers in-depth data analysis, while Traackr includes international data coverage. The choice really depends on the team’s needs.

5. Report Creation: The final step is organizing the findings into a presentable and digestible format. Good reports highlight the influencer’s potential impact on the brand’s reach, sales, and brand awareness.

It’s important to remember that each brand may need a unique approach as their needs will differ. The right choice of platform will depend on how well they align with the brand’s specific goals and objectives.