Gerrybag's protoboard is how mine looked at first.
Ataradov's protoboard is how they looked at the end.
It's like what happens to many people's handwriting between grade school and college.
my 2 cents:
Breadboard = solderless
Protoboard = holes with copper pads.
Perfboard = board with holes but no copper
Veroboard = holes with strips of copper.
Matrix board = WTF is that?
I would think it is protoboard with some of the holes connected in a pattern.
This isn't personal preference. These are the terms that are most likely to find the thing you want to buy, at least where I live. US.