We add projects as they catch our eye, or upon request, because we manually categorize and try to clean up the contributor list, mark bot committer as bots (and exclude them), and identify a few of the top developers as we add them.
We've added Gladys Assistant @ https://ossrank.com/p/2035
I'm the core maintainer of an open-source smart home software (https://github.com/GladysAssistant/Gladys, 2.2k stars, has been existing since 2014), and is not listed, any reason why? :)