Only the channel backup* is custodial, but only YOU hold your own priv. keys (seedphrase, 12 words). See this insanely good comparison table of intermediate self-custodial wallets:

*as compared to the advanced self-custodial ln wallets/mobile ln nodes that have a SCB file for that.. dont ask me what this is idk ahha

hotsauce. https://darthcoin.substack.com/p/lightning-wallets-comparison