1. Clear Brief: Ensure you provide a detailed brief to all influencers involved in the campaign. The brief should include key messaging points, delivery timelines, the aesthetic of the campaign, technical details, etc. This ensures all influencers are aligned and can produce consistent content.

2. Regular Communication: Keep constant dialogue with the influencers. Regular check-ins allow you to keep track of progress and ensure influencers stay true to the campaign’s message and goals.

3. Cohesive Visual Aesthetics: For a harmonious look across all influencer posts, decide on specific themes, filters, or color schemes to be used in the campaign.

4. Content Approval: Consider using content approval features offered by some platforms. For instance, Flinque allows brands to review influencer work before it goes live, ensuring continuity.

5. Influencer Selection: Carefully choose influencers whose styles naturally align with your brand image and campaign. This allows consistency to come naturally.

6. Resources and Training: Offer necessary resources and training about your brand to influencers. This helps them create accurate and consistent content.

7. Guidelines: Establish clear project guidelines for each influencer to follow. This helps maintain consistency across the campaign, regardless of the platform or influencer involved.

Remember, while all these strategies help ensure consistency in content, it’s essential to allow the influencers some creative freedom. Their audience follows them for their unique content and style, and overtly strict guidelines might hinder this creative expression, thus compromising the campaign’s effectiveness.