I’ve gotten prepaid sims for things but obviously that’s not really a feasible method for your main life phone.
Yeah but you already need to be on the list for them to check at all
And even then I doubt they would. They got limited resources. with that being I have no idea about your threat model.
If it involves over zealous glowies, this comment section is prolly a bit too rookie to properly comment. Also this things are very geo specific as each jurisdiction will have their own KYC regs and compliance practices.