To Answer your question: You can easily follow influencers on Amazon by going to "Accounts and lists" on the main page, scrolling to to "Explore idea lists" and clicking on "explore more": Find influencers from photos you like and click the "Follow button" next to their profile name, you can also view their storefront.
How do I find someone's profile on Amazon app?
Hover over Accounts & Lists > Find a List or Registry. Select either Wedding Registry or Baby Registry from the menu bar. Type your friend's name and select Search. Select your friend's profile and view the list.