Is there a similar server like Bitcoin core that truly supports accounts? Is there a similar server like Bitcoin core that truly supports accounts (and also RPC)? 

I was hoping for something like the ethereum geth node. where each account has it's address and individually password protected.
Bitcoin Core since 0.15 supports multiwallet.

That is probably much closer to what people expected the accounts feature to be (and confusion about it is one of the reasons for deprecating it).

Using multiwallet, one Bitcoin Core instance can maintain multiple entirely separated wallets simultaneously. They all have their own addresses, own keys, own transactions, own coins, own labels.

This is in contrast to the older accounts feature, where the keys, coins, and labels are shared across all accounts - only a balance was maintained per account.