Scarf - Question about stitches

Hi !
I am another newbie trying to make a scarf that doesn’t curl.
I WANT to make an intarsia scarf with different "Logo’s"
I have made my own pattern-FUN!
Now I need to know what stitches (Garter, Seed etc) will be best with switching yarn color in the middle of the rows.
I would really like it to look good from both sides–not sure if I’m ready to tackle double knitting.

You could always knit the scarf design twice as wide, with the logos beside each other, then fold the scarf in half and seam it down the side.