Please enlighten us about the backend provider, I'm interested. It seems the OP of this thread is using the same backend as he's not willing to tell it.
edit: Ubersuggest mentioned by someone says in dev blog
Ahrefs says "and other third party data sources to find keywords" [0]
Pretty sure they buy data from software tools like free anti-virus scanners, toolbars, chrome extensions, VPNs, etc that resell their user's web browsing history. This is called "click stream data".
edit: Ubersuggest mentioned by someone says in dev blog
https://neilpatel.com/blog/ubersuggest-update/
> My data feed from SEO Power Suite, Data For SEO, and Shared Count totaled $75,253 for January.
Is this the backend mentioned?
Some direct links for others interested in this
https://www.link-assistant.com/backlink-api.html
https://dataforseo.com/
https://www.sharedcount.com/