In June 2023 Tomas Blatak and the @Leadspicker team put a side project on Product Hunt. It got featured, collected 300 upvotes, finished seventh product of the day and brought them 91 paying customers.
In September 2024 they launched their main product. It got 612 upvotes and was the most upvoted launch for most of that day. They got one paying customer.
The product was better the second time. Something else changed, and it's the most useful thing I found while doing this homework.