I love this! This artist's style reminds me of a mixture of the books, 90s, and RA eras! You can see it in their outfits!
Though Ralphie's kinda outdated. IDK when the original artist drew this, but Ralphie received a small design update in Season 3 in terms of his shirt, as seen below. And in my opinion, the artist should've put an R on the shirt either way.