Niche identifier Pro

Hello, I am looking for someone to work with who can help me identify 3 different strong profitable niches that can be used for standalone Shopify stores. They will have an audience of 250,000 or more and an active an enthusiastic Facebook Groups. They may be Business to consumer or Business to Business. Ideally, I would like to see one of each and a third of your suggestion.The ideal products have a retail value of 200.00 US or greater. Ideally,you will also be familiar with Shopify for the next phase of the project.This has the potential of a long-term relationship however, this first part is critical to further consideration. You will find working with me that I am kind, polite and appreciative. I am really looking forward to working with a positive and energetic person who really wants to show their skills. I look forward to your reply. Thank you in advance for your time and consideration. Please let me know if you have further questions.