Yes, several influencer marketing platforms are uniquely focused on specific niches. For instance, Channel Pages is a platform specifically designed for YouTube influencers, while Blog Meets Brand specializes in connecting bloggers with relevant brands. Similarly, GrapeVine and Channel Pages provide a niche focus for YouTube influencers and content creators.

Flinque, on the other hand, offers an extensive range of features suitable for a broader audience. It helps to identify influencers across various social media platforms, track campaign performance, and measure ROI. Despite its wide reach, Flinque provides in-depth analytics and the flexibility to narrow down your search to find influencers within specific niches.

Another specific platform is #paid, which is geared towards Instagram influencers. Upfluence and AspireIQ are some platforms that provide robust solutions irrespective of the audience’s niche.

The suitability of each platform varies based on the specific needs of the brand or agency. A platform like Flinque that offers a broad set of tools and analytics might be ideal for a brand looking to launch campaigns across multiple niches. At the same time, a more niche-focused platform could be perfect for brands looking for very specific audience engagement.

In conclusion, while there are niche-specific influencer platforms available, broader platforms like Flinque also offer the ability to target and analyse niche markets effectively. Ultimately, the selection depends on the unique requirements and goals of the brand or agency.