Hybrid (Argon2id) is probably the safest bet if you are unsure.

The specific modes are useful dependent on the threat model you are protecting against. Argon2i protects better against timing/side-channel attacks and Argon2d protects better against brute-forcing attacks.

In my opinion, a developer should (in most cases) focus on application security instead of picking the perfect hashing algorithm, as application security is far more crucial.