Besides bitcoin, beam is the hottest coin to invest in 2019. My list of hottest coins include BNB, Ethereum, Bittorrent, Houbi etc. Sorry, I cannot explain why these coins are hottest for me as I am not a crypto expert. I have just given you my thought about hottest coins for investment.
Bittorrent, Houbi - I would not recommend holding these coins for a long time. I see that these assets have high capitalization and not a very good level of liquidity.