Managing Hundreds of Crypto Wallets Across Multiple Chains - Help Needed!

I'm facing a growing challenge: managing hundreds of wallets (mnemonic seeds, private keys) across various blockchains, each with different derivation paths. I'm seeking advice on effective ways to store and operate with them effectively because I'm using a separate offline password manager for them and it's not the most convenient solution (having to import them manually). While I completely understand the security risks of using the same mnemonic for multiple chains, that's the current state of things.

Ideally, I'd like to find a secure solution that offers the following:

• Vault-centric approach: Doesn't store private keys directly unlike wallets.
• Multi-chain support: Seamlessly manage wallets across various blockchains.
• Derivation path handling: Handle different derivation possible paths for each wallet.
• Security: Store private keys securely and encrypted.
• Convenience: Offer features like track balances and positions across different projects, airdrops, analytics, etc.

Does anyone have the same problem? Any solutions?