In my experience, commas are the punctuation that I have observed, if any, and I have never seen any usage of semi-colon, not that I remember.
Here, I'll explain my observed usage of commas, in hope it helps. Commas mostly correspond to its use in a normal sentence. Bullets merely break the sentence into several distinct lines. E.g.
The things that we use most commonly are:
- balls, and
Here, the list can be written as a single sentence.
The things that we use most commonly are: bats, balls, and wickets.
Thus, logically we can extend commas to semi-colons. But it might be more preferable in lists with long phrases as bullets. E.g.
I have visited many and many places throughout the world:
- Sweden, Norway and Iceland in the Europe;
- every single country of the Americas;
- also, China, Vietnam, Thailand and some more neighbouring countries in the far east.