Default transliteration · Olivia
奥丽维姬 is not a name a native would pick
Four characters, no family name, 丽 doing pretty-girl work. That is a pronunciation paragraph. A class vote does not change the grammar.
Four graphs, no 姓
Ordinary Chinese personal names are two or three characters: a real surname, then a given name. 奥丽维姬 is four. There is no 百家姓 in first position. 丽 and 姬 are doing caption work — beautiful, girl. Kill.
The class-vote cousin: 奥丽维娅
A study-abroad teacher asked her Chinese students for a name she could say. They chased the English sound and landed on 奥丽维娅 — ào lí wéi yà — mysterious, beautiful, safeguard, pretty girl. She treasures that it was made with them. Structurally it is still four graphs and no surname. Same pipeline as 奥丽维姬. We are roasting the seating-chart method, not the class.
News form: 奥利维亚
奥利维亚 is the other Olivia transcription this checker already flags. It is the same length problem in a news-wire font. This page will not mint you a 2–3 character replacement. Paste what you have. If you want a name natives would actually use, that is a different door.
Source: Cultural Immersion through Names — Deceptively Blonde (29 Aug 2016)