Look how many choices you listed.  Proton-to-Tutanota isn't E2EE, so it's only among that provider.  If the person you're talking to is cool enough to use privacy email, they are cool enough to use a REAL private protocol like simplex.  The purpose of email is the people you're reaching out to don't care.  And the businesses you sign up for are forcing you to your account to it.

Also take a step back and think about what you're really standing for right now.  You're literally trying to haze me for telling people to be decentralized and as self-sovereign as they can be .... and you're instead trying to degrade what I'm doing to promote millionare Protonmail.  Like what's your goal?

Clearly we would be in a better place if everyone and their mother had their own VPS with email.  So it's unclear your agenda.