https://bitcointalk.org/index.php?topic=1960307.1260;topicseen
and LiteDoge
https://bitcointalksearch.org/topic/annldoge-litedoge-such-fast-such-stake-wow-proof-of-stake-20-1308769
I know there are many more but not sure about the others that are still around and family friendly.
I think it depends on the time, I don't dare to hold the old meme for too long (more than 6 months), when the price has gone up to 2x then sell it immediately, the competition for altcoins is too tight, there will be more profitable altcoins.