We had 5 personas at Hatch, but we only used 2, Chris and Helen. When listening to teammates talk about our personas, it was easy to pick up that Chris was the guy that was in the know about investing and liked to talk about it, and that Helen was someone who wasn't very confident and was started out in investing. Some of the wider team found this enough information to be helpful, but as product designers, we wanted to understand our customers more. It was increasingly hard to match our users in interviews into our 5 personas, we almost never spoke to Melanie or Katie, they simply were not Hatch customers, or if they were, we never spoke to them.
We wanted genderless personas as investing one of the misconceptions Hatch is about breaking is that investing, "it's a man's thing". Forbes produced an article explaining Why women are better investors, something that our 2 female Hatch founders are passionate about.