You can put my name as Contact of all Fedora and RHEL platforms.
Note: Fedora "Rawhide" is the rolling release and it's common that these buildbots are broken by kernel, compiler or glibc updates, rather than actual Python regressions. Time to time, it detects real Python regressions. Tier 2 should only target Fedora *Stable* (which is the case ;-)).
glibc XXX [fedora-stable]
Mentioning that Fedora uses glibc is nice, but I don't think that it's worth it to mention the glibc version. Fedora is released every 6 months and the glibc version is updated at each Fedora release.
x86_64-unknown-freebsd XXX https://buildbot.python.org/all/#/builders/172 XXX
You can put my name as Contact for the FreeBSD buildbot.
I don't *actively* support FreeBSD, but last years, I did "best effort" support: add some FreeBSD features sometimes, adapt Python for new FreeBSD changes, fix regressions specific to FreeBSD, investigate unstable tests which only fail on FreeBSD, etc.
You can mention that FreeBSD now uses the "clang" C compiler, since most Linux distributions (ex: RHEL) use GCC. It's a significant difference.