It seems some wishes are from time to time granted.
Binding to libmagic: Stephane Carrez / ada-libmagic · GitLab
See AdaOgg and VulkAda - Ada2012 Bindings to OggVorbis and Vulkan
Gid supports PNG (fully in Ada) gid/gid.txt at 174780e3aee4337619040fdbdbfe5a03a0605adb · zertovitch/gid · GitHub
ASFML (bindings) too: GitHub - mgrojo/ASFML: Ada binding to the SFML library