I think a good portfolio is one where the weightage is not equal among the coins but distributed to be skewed towards those which have performed well in the last few decades. This will therefore include more coins from the top tier list and not newly launched shitcoins that have no value or will go bankrupt in a few years.

This choice making is a tough call and takes experience. However with bitcoin you can never really be wrong about buying. I am not saying that the coins you have listed above are worthless, but I prefer the long term approach and in the long term, you can yourself extrapolate and see how nicely the top 10 have performed over the years.