It seems like you lumped liberal and libertarian together, is that accurate? If so, why? Aren’t they quite different economic and political philosophies?
They're historically synonyms. The word libertarian was invented only after the word liberal was highjacked and warped into its modern meaning.
That split seems to have happened before I was born, a loong time ago, ;) Don’t they mean different things in Silicon Valley today, and wouldn’t both libertarians and liberals take issue with being lumped together today?
There was no such split in most countries, so internationally it is weird to differentiate the two. Liberals are right wing in most places (they want small government with low taxes).