I think I found few!
flac-1.4.3.tar.xz (currently at flac 1.5.0)
openjpeg-2.5.0.tar.xz (at 2.5.2)
tiff-4.6.0.tar.xz at 4.6.0t (at 4.7.0)
ffmpeg 7.0 (currently at 8.0)
x265_3.5.tar.xz (at 4.0 )
x264-snapshot-20210615-master.tar.xz
and
x264-stable.tar.gz from 2022 (currently at x264-stableR3191.tar.xz from 2024)