Conversation so far:
How many seneca people are there now?
In the 21st century, more than 10,000 Seneca live in the United States.
What can you tell me about Seneca people?
The Seneca are a group of indigenous Iroquoian-speaking people native to North America who historically lived south of Lake Ontario.

Question: Are there different groups of seneca people or is is just one as a whole?
Self-contained rewrite: Are there different groups of seneca people or is is just one as a whole?