I’ve refocused the Debian Jr. programming metapackage on languages made for kids. I’m sure there are some who have used scheme or python with their kids, and sure, if you want to do that, go ahead. But these were only initially included because of a lack of choices.
Littlewizard is an icon-based language only recently added, and kturtle replaces the less-kid-friendly ucblogo. I’ve also been pursuing #236721 to see what it would take to get Squeak into main. While it doesn’t look like there’s hope of that anytime soon, recent changes to their licensing might allow it to go into non-free.