I do not see these coins are privacy coins, but if you want to buy any amountithen, I will suggest you should buy aster which is an exchange token. Another one that I can suggest is LIT but which you did not mention.
If you want a less volatile one, maybe you can go for zano.
If you want a privacy coin, go for monero.
Well, op wasn't asking about privacy coins, but privacy related coins

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Anyway, what comes to question of op, this seems like a marketing scheme of bag OP is holding. And my answer is none of them. They are all overvalued, including Dero and Azero and especially Aster.
Zeno is the only one that seems to have upwards trajectory if we only look at the chart (whole chart), but that might be just because some privacy coins are just riding on the wave of monero. I am thinking this will change after FATF slowly moves to next phase from adoption to enforcement.