[Nagoyankee]

1) You must forget about using と. Native speakers won't ever use it in a list of names.

You have the following choices:

AAA / BBB
AAA ・ BBB
AAA & BBB

2) The Japanese counterpart of your "alphabetical order" is 五十音順. The baby talk for that is あいうえお順. That's the order in which words are listed in a Japanese dictionary.

初音ミク comes before 巡音ルカ, as you said.