I think the biggest advantage of Android over iOS is the availability of consumer choice. There are so many different Android phones on the market, each with their respective pros and cons, that there is bound to be a device that aligns with your needs.
Now that can also be an advantage of iOS over Android in a sense. With Android you have to make a choice and it can be the wrong one. With the iPhone there is one option, and it is what it is.
Personally I use Enpass.
It’s both my password manager, but also the place where I keep track of notes about devices, accounts and software licences.
I tried to change over to Bitwarden a few weeks ago, because that is what my office wants us to move to, but the limitations are not really bridgeable for me. Bitwarden seem to me to be very specifically a password manager and not much else.