but my 1st question now (among many others) is does it matter what name and email address I use at step 1?
That would be for your own PGP/GPG key pair, you can leave the email field empty if you want.
For verifying Electrum signatures, it doesn't matter if you've set an email or not.
Oh and can I download it on an iOS device without being required to verify it via GPG like downloading it on a Windows 10 P.C.?
It's never been a requirement but optional for the users' own safety.
AFAIK, there's no Electrum in the 'App Store', if there's one, it isn't official.
For Electrum downloaded from Android's PlayStore, you should check if it's uploaded by "
Electrum Technologies GmbH" since you can't verify an already installed app.
If you want to verify, download the "
.apk" and its signature file from electrum.org to verify it in your PC before installing to your device.