Even so, if you click through she has another page that lists hybrid PACs. I have no idea if even that is the full picture; US politics are complicated. The project is open source so perhaps you can submit a PR to make it better.
It’s showing the same data that verdverm linked over at the FEC, which places Fairshake at #9 out of any kind of committee. Arguably ActBlue and WinRed shouldn’t really be listed there, since they are fundraising platforms that serve as an intermediary.
Kudos to both of you for having that.