In order to ensure your influencer campaigns encompass a diverse group of influencers with a variety of audiences, there are several key strategies you can employ.

1. Use Discovery Tools: Utilize platforms that have robust influencer discovery features. Platforms such as Flinque have a vast network of influencers from various niches, providing the wide scope required for a diverse campaign.

2. Comprehensive Audience Analysis: Understanding influencers’ audience metrics is crucial. Look not only for audience size, but also demographics, interests, and engagement rates for a fuller picture.

3. Diverse Niches: Incorporate influencers who have a hold on various different niches in your campaign. This allows you to tap into various sub-segments of consumers with distinct interests.

4. Mix micro and macro influencers: Both micro and macro influencers have their own strengths. While micro influencers may have more engaged audiences, macro influencers can provide access to a larger audience base.

5. Culturally Inclusive: Ensure your campaign includes influencers from diverse cultural backgrounds. This not only broadens your audience but can also add depth to your campaign messaging.

6. Track & Adjust: Use sophisticated tracking and analytics to measure campaign performance. This allows you to adjust your campaign on the go. Platforms like Flinque provide detailed campaign analytics, ensuring brands have all necessary insights to optimize their strategy.

Remember, the most suitable influencers for a brand differ on a case-to-case basis, dependent on intended campaign goals, target audience, and branding. Diverse influencer selection, while fruitful, should be approached strategically for the most effective outcomes.