Because whoever generated that chart decided to only include these. The raw data is avaiable for anyone to play around with here in csv: https://data-analysis.fedoraproject.org/
It looks like to me that the chart is coming from the ublue project, so if you are a tech person, you can fork their countme repo and modify it to your needs.
Why isn’t Secureblue included in the count?
Because whoever generated that chart decided to only include these. The raw data is avaiable for anyone to play around with here in csv: https://data-analysis.fedoraproject.org/
It looks like to me that the chart is coming from the ublue project, so if you are a tech person, you can fork their countme repo and modify it to your needs.