Are there any coins in 2017-2018 that have reached ATH, and now the price is above the 2017-2018 ATH again?
yes that's a picture of altcoins, if we measure it by price. If we measure it from how the community is, it will be clearer which altcoins will survive because of a good and loyal community as well as coins that are only Uforia because the community is not clear.