Depends on the use-case.

Do they need to be able to use the wallet with Nostr, or at least have the option to do so without switching wallets? You'll want to point them toward something with Nostr Wallet Connect as an option.

Custodial: Coinos or Minibits

Self-Custody: Alby Hub

Honestly, though. Self-custody lightning is NOT for the beginner. It's for someone who understands the fundamentals of how lightning works, and who is willing to take responsibility for managing their liquidity, understanding that it will be costly and frustrating when they mess it up.