Perhaps I'm overlooking something, but as far as I can tell there is no current way to send any attack cantrips you take via Magic Initiate to the attacks list for easy use. Does anyone know if there is a way that I just missed? If not, that functionality is definitely something I would suggest be added.

It's not something you missed, it isn't an option right now.  I'd like to see this with all spells frankly so that we can put them on action lists for NPCs/Monsters and in attack lists on character sheets for simplicity.

Yes, totally agree. I would really like to see the Magic Initiate spells have the option to be displayed as attacks.

I'll like to support this suggestion of having a way to add the spells we obtain from magic initiate as an attack

I'm trying to add Eldritch Blast manually as a custom attack but:

1. specifying it being CHA based adds a bonus to both attack and damage and I need to add a negative bonus to damage to remove the bonus to damage
2. There is no force type in the drop-down list for attack customization right now