Best for what? Investment or Privacy be clear about it next time.
If you are looking for investment purposes then it should be Monero, because it has the potential to grow and is always paired with Bitcoin. Another benefit of investing in Morero is staking, it is not as easy anymore as it used to be when it got listed the first time on an exchange. Accumulating more whenever the market is in red will help anyone reach the goal of earning the staking reward.
If you are looking for complete privacy then Monero has proven it is the best. All other coins you have listed came after Monero and you can call it the father of privacy coin. A lot of users who are active in the forum use it to hide their Bitcoin transaction trace, which I would consider a is a good habit in the current environment we are living today.
Since when do you need to stake Monero to earn rewards? It has always been a PoW coin. Meaning you can only mine it with either a GPU or CPU. From a decentralized standpoint, no other privacy coin can outmatch Monero. Even Zcash has some well-known vulnerabilities which defeat their purpose of full privacy/anonymity (a backdoor is one of them). I'm not sure if this was fixed after the introduction of the "Halo2" upgrade though. The company behind Zcash already announced its intentions of shifting from PoW to PoS. This will make ZEC even more centralized, and a less-appealing option to the paranoid.
The crypto industry needs more privacy coins to help battle against government censorship. It already has enough "meme" coins and useless junk (NFTs, centralized "shitcoins", etc). With Wall Street on board, I doubt things will get better in the future.
