This task has two parts.

The first part is to split the string to a list of individual names. They're separated by commas and the word "and". This is possible, and you almost got it right. Try something like

split /(?:\s+and\s+|\s*,\s*|\s*,\s*and\s+)/
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There are two important point here: don't use a capturing parenthesis in the regex (if you must use grouping, use (?: ) non-capturing groups), and make sure to find and only if it's a separate word, not when it's inside a name.

The second part of the task is to take each name and break it to a surname and given name. That is, sadly, impossible.