My 5 favorites:
1. Bitcoin (BTCTC)
2. Tezos (XTZ)
3. Litecoin (LTC)
4. Ethereum (ETH)
5. Cardano (ADA)
In my case, however, there are additional ones:
Kyber Network (KNC), SwissBorg (CHSB), Velas (VLX), BasicAttentionToken (BAT), Compound (COMP), Tron (TRX), BitTorrent (BTT), JUST (JST)
I realized that there were four coins that were always the red line, and needed to be held in the long run. I guess that is
1. BTC
2. ETH
3. LTC
4. ADA
after these four coins, people sometimes have other choices. Well, for me, maybe I would choose BCH, or BSV to be held in the long run. I feel that the potential is the same as bitcoin and ethereum, only the level of volatility is higher.