indeed i totally agree with you i think now and only now it's the best time to buy altcoins but i disagree with you with the list you provided i think if someone want to invest in crypto i think he should invest in the following : BTCSV , TIO, THETA Neo ; this are in portfolio and they really have a promising future.
It seems to me that, as they say, there are no friends for taste and color, therefore it would be best to draw conclusions only based on your data and on your analysis, because today there are still a very large number of promising projects, but this is only my opinion.