Are there any major differences in the Ukrainian and Russian keyboard layouts?

I'm making a laptop for someone. Since it should be a surprise, I don't want to ask this person directly. Stickers should be stuck on this laptop with a German keyboard layout so that it can also be written in Ukrainian.

Now there are Ukrainian, Russian and Ukrainian-Russian stickers on Amazon.

But the alphabet of these two countries is the same, isn't it? If the layout only differs with punctuation marks, I would choose the Ukrainian variant. If there are significant differences, I would choose the double variant because it writes both languages.

Not quite, there are a few letters that are different

Ukrainian:

Україна
Russian:

Украина
This ї (i with 2 points) is a letter that only exists in Ukraine,

the normal и also spoken like our i, but is also available in Ukrainian.

A few other characters are assigned differently, but most of them

right away, a Ukrainian can handle the RU keyboard and vice versa.

There are differences. See, for example, answer from "juergen63225".