After the stickers are peeled off, alcohol, a washcloth, and iteration worked surprisingly well for me, getting off the residue.
And at least during COVID times, 70% rubbing alcohol is approved by Apple.
Is it OK to use a disinfectant on my Apple product?
Using a 70 percent isopropyl alcohol wipe or Clorox Disinfecting
Wipes, you may gently wipe the hard, nonporous surfaces of your Apple
product, such as the display, keyboard, or other exterior surfaces.
Don't use bleach. Avoid getting moisture in any opening, and don't
submerge your Apple product in any cleaning agents. Don't use on
fabric or leather surfaces.