Is it OK to say a lot of various cultures?

It's not ideal to say "a lot of various cultures" because it can sound a bit vague and dismissive. It implies that cultures are just a collection of things rather than unique and complex systems of beliefs, values, and practices.

Here are some alternative ways to phrase it, depending on the context:

* Focus on diversity: "Many different cultures"

* Highlight specific cultures: "A wide range of cultures, including..." (list specific cultures)

* Emphasis on variety: "A tapestry of diverse cultures"

* Focus on the impact: "Cultures from around the world contribute to..."

The best way to phrase it will depend on what you are trying to communicate. Remember to be respectful and avoid generalizations when discussing different cultures.