Modern cryptography

Hashing: BLAKE3, Keccak-based functions (SHA-3, SHAKE256) or BLAKE2b.

Encryption: XChaCha20-Poly1305, ChaCah20-BLAKE3, or, I would like to see keccak-based AEAD constructions.

Key Exchange: X25519, X448

Digital Signatures: Ed25519, Ed448

Password Hashing / Key Derivation: Argon2id