I invest in Bitcoin and Ethereum, i think both are the best investments for the long term.
Most of us do because in these 2 top coins we can feel the safest of our investments But I also consider investing in lower ranking coins that I believe has potential,also tokens that I bought in ico wayback .though some are slowly taking off but I still trust them to bring me a profit sooner
we have to look at our funding for investments with top and top coins, I always invest like ethereum and bnb which have very valuable values every year, I trust both coins because they have a big profit 
This is enough for us who is willing to keep holding and not for the easy money kind of thing