There are "coins" that lie on their own blockchain (like ETH, BTC, Monero) and other "coins", that are tokens.

Are there DEX, where it is possible to change "coins" that are not tokens, but have there own blockchain. Or can we only change "coins" with a DEX, that are part of the same blockchain and are tokens?

Example:
A) Are there DEX, where I can change BTC against Monero (I mean not tokens, but the real BTC and Monero)?
B) Or can I only do this on CEX?
C) Or are there "copys" of Bitcoin and Monero an Ethereum, so that I can Bitcoin tokens and Monero tokens change on Ethereum?

Would appreciate some answer. Thank you.