Xmr: Because it is untrackable. The OG privacy coin.
Doge: Because it is the king of meme coins.
Ltc: Undervalued imo. Has a good upside potential.
Etc: The original eth chain. Undervalued.

I couldn’t find a 5th coin. To me, the rest are as good as shit. You can ignore etc too. Xmr/ltc/doge are the best alts which are established and have a good reputatuon. I didn’t include eth because it is already way too overpriced imo.