For onboarding the non-technical bitcoin curious, I am leaning towards my default recommendation being the custodial, bank-like LN-enabled wallet, Wallet of Satoshi (WoS).

The reason is simply: There's no block until you backup, the prompt prodding you to backup is simply a little red exclamation point, and not some "scary" WARNING!, no PIN, no 2FA, ... nothing more is needed to get started!

The WoS App's description on Google Play reads: "The World's Simplest Bitcoin Lightning Wallet". I find that fitting! To install:

You can then receive and send, on-chain. LN, and you even get a LIghtning Address (though a nym is assigned automatically for you, and you can not change it).

Give that person gentle instruction to have fun playing around with some sats, but with the caveat that those funds will disappear, essentially, if they uninstall the app or lose their phone before they link their e-mail address. So "just a few bucks worth", until they have linked their e-mail address.

Then let them play around with WoS for a couple days, then nudge them to link their e-mail address if they haven't already. Once that linkage is done, the funds tied to that e-mail address can always be recovered later if needed. And what does that recovery look like? Same thing: install the app, then link the e-mail.

So WoS essentially works like an online bank account except that before you link your e-mail, the auth for that account is stored locally in the app itself. But once you have linked your e-mail, the account is accessed simply by logging in using your e-mail address (and then doing the "link" part: copy/pasta, or QR code scan, of the 2FA code received via e-mail). You only need to do that "link e-mail address" once, and the app will remain authenticated.

So after they have their email address linked, then ease them into the next phase ... the "Not your keys, not your coins." discussion. They can transfer their funds from WoS after they have a better, more secure wallet set up. But might they instead prefer to continue using a bank for their sats,... sure. And WoS isn't really the worst place for that. As long as they know: banks are a third party risk, and bitcoin works best when you don't need a bank.

tl;dr: WoS is like a toy hammer. Looks close to being like the real thing, and anyone, even a toddler, will figure out how it works. Just don't try to do anything productive with it.