iceberg levels tiers

UBUNTU DEBIAN MARIOOS; ARCH LINUX MANJARO KAIL LINUX LINUX MINT UBUNTU*GAMEPACK POP!_OS; GENTOO LINUX SLACKWARE TAILS POSTMARKETOS OPENSUSE; LFS BEDROCK LINUX GOBO LINUX ALPHE LINUX BATOCERA RECALBOX RETROPIE ALMA LINUX; LINUX FOR WORKGROUPS LINPUS LINUX PEACH OSI; NORTH KOREA LINUX JUSTIN BLEDER LINUX; TEMPLEOS; WINDOWS MACOS ANDROID IOS CHROMEOS WINDOWS PHONE MS-DOS XENIX CHROMIUMOS BASIC