When speaking to friends on a Samsung, or a pixel or an iphone, they each see different emoji sets. fortunately I use Textra! and can change my emoji set to theirs so I can see exactly what they see, so I know I'm conveying the right message. unfortunately we have to go back to main settings to change it each time you want to do this with another contact.
add the emoji set customization that Textra already supports to the unique contact customizations!