I'm not huge into altcoins, but I've owned a few and right now I'm interested in coins you can stake. Passive income has great appeal for me, though there aren't any good coins that I know of where the return is all that high--but IMO they're worth playing around with.
What about NEO? Their wallet is one of the best I've seen, and you can earn GAS without having to have the wallet open 24/7. Right now the price is pretty low relative to where it's been in the past, so now might be a good time to buy. And the other coin I've been buying is PIVX and have earned some interest on it so far.
I didn't even recognize some of the coins OP listed, but I'm pretty sure the more obscure ones are really risky. I'd probably stay away from coins that aren't very well known, as they might have thin markets and could be hard to sell when it comes time to do so.
Hardly any of them, if any, are obscure. The last coin i picked up was just $100 worth of NULS, which I'd say is the only obscure coin, though its still in the top 100. The rest are almost all in the top 50.
I still have a very tiny amount of NEO sitting on an exchange from like 2017.
I actually stopped getting altcoins now. I have 23 coins in total now, 19 of them altcoins I've bought recently. Well and a little NEO and I think Digibyte which are very small amounts I have left over from 2017, so 25 coins total if you count those.
I don't think I'm gonna get any more altcoins now, I decided to make one last bitcoin buy today instead of putting that into altcoins. Probably done accumulating crypto now, other than putting some money on an exchange in the coming months just to trade bitcoin for fun and make some extra money in the short term.
My final altcoin list that I picked up this spring, in addition to BTC, ETH, LTC, and BCH, (and tiny bit of NEO and DGB that I've basically forgotten about) that I already had, in order of how much I bought:
EOS
DOGE (actually this i bought back in November but I'll still count it here since it was the start of my accumulation for this bull run)
XRP
XLM
BAT
TRX
XMR
ZEC
HOT
VET
BNB
ADA
LINK
ZIL
DASH
ONT
DCR
WAVES
NULS
I had planned on possibly picking up a few more and buying more of some of these but I instead bought a bit more bitcoin today to finish up my accumulation phase for this bull run.
Bitcoin, at current prices, comprises 89.8% of my portfoilo, ETH is 4.3%, and other altcoins are 5.9%. Though altcoins are down a bit right now from the average when I bought them while Bitcoin is obviously up since then.