The command palette has >50 commands by default — no need to install plugins.
I’m seeing >50 on Mac and iPad. Do you see the same problem when you turn on Restricted Mode (in Settings > Community Plugins), and restart Obsidian, which disables all community plugins? If not, a plugin is causing the problem. If you still see it, try switching to the default theme if you’re not using it (I’m not completely sure this can affect that, but it doesn’t cost much to try).