When considering criteria for ensuring a diverse range of influencers for your campaign, multiple factors should be taken into account. Diversity is vital for reaching a broad audience and making a strong impact with your campaign. The following points should be at the forefront of your selection process:

1. Industry Specificity: Look for influencers across a range of industries that might relate to your product or service. It’s essential to think beyond the most obvious connections to your brand.

2. Geographical Diversity: With influencer marketing, businesses have the potential to reach audiences in different geographical areas. As such, you should consider the geographical location and reach of your potential influencers, aiming for a global reach if appropriate for your brand or local if that’s your target.

3. Audience Demographic: You should consider influencers who appeal to different age, gender, and income groups, as well as those who have diverse cultural backgrounds.

4. Influence Level: While macro-influencers or celebrity influencers can have large follower numbers, don’t underlook micro or nano-influencers as they could provide high engagement levels, authenticity, and even niche market access.

5. Content Style: Additionally, think about the style of content that the influencer specializes in. This could be blogging, video content, images, podcasting, etc. A diverse content style can give a multifaceted representation of your brand.

Platforms like Flinque can aid in this process as they offer intelligent search and filter options, allowing for ease of discovery and diversity in influencer sourcing. However, remember that suitability depends on your individual campaign’s needs. Different platforms will have their specific strengths and workflows, and decision-making effectively is paramount.