AutoModpack

AutoModpack ships one jar that covers every supported game version. The release page lists the exact files and game versions of the current release.

Supported versions

MinecraftLoaders
1.18.2, 1.19.2, 1.20.1Fabric, Forge
1.21.1, 1.21.4, 1.21.5, 1.21.8, 1.21.10, 1.21.11Fabric, NeoForge
26.1, 26.2, 26.3Fabric, NeoForge

A server and its clients must run the same Minecraft version, as always. The AutoModpack jar itself is the same file everywhere; it detects the loader and game version at startup.