If you can get Baltic Birch or Aspen - plywood from a good lumberyard, it is
nice to cut - not directional, not too thick. Very Low on the splintering.
I often use Luan plywood sold specifically for woodcut, but it is a mahogany
and therefore fairly open grained and directional. I like to layer thinly
printed colors -the underneath colors show through, and that's why I use it.
Shina plywood is a joy to cut if you can find it. No splinters.
I quit using pine after my first semester in woodcut almost 20 years ago and
don't expect to go back anytime soon.