I am trying to guess what will be the top 3 coins in 2 more year, say on 1st June, 2020.

Probably, BTC may not be the champion anymore but will still stand at runner-up position thanks to its historical role. ETH providing reliable platform for many valuable tokens can overthrow BTC to become the king. One of the coins with 3rd-generation blockchain like ADA or EOS will deserve the 3rd.

Anything can happen, and that's my prediction. What's yours?