Those are your best bets to start with.
But honestly, I am a 1x convert, and it's pretty rare (though not impossible) to drop a chain with those narrow-wide chainrings.
Thanks man! I will see what I can do. Goal is to get a new mtb probably in 2021 or end of this year, although chances of there being inventory this year isn't great.
There will be a lot of used bikes for sale in a year or so.
Ha that's a great point Hans.