Answer
Alignment in a Lobby List element is driven entirely by the underlying column's data type, not a configurable style: columns typed as Number are right-aligned, and columns typed as Text are left-aligned automatically. If a numeric-looking column (like a monetary value) is unexpectedly left-aligned, check whether it was actually created as a Text-type column by mistake — correcting the column's type to Number fixes the alignment without needing any separate alignment setting.