If the company and employees identified by other people in this thread are correct, then yes, it would seem that this company has a Korean CEO who enjoys the loyalty of a Korean clique within the company. Some of the Caucasian employees have close ties to Korea as well. OP was ostracized and eventually kicked out because she didn't go along with the clique despite sharing their ethnicity.

The H1B's are Chinese and probably have no influence over how the Korean clique runs their company. The quote from "Michael" suggests that he has little more than contempt for the "Chinese kids". I can almost hear the Korean version of that remark in my head, and unfortunately this kind of racism is all too common among the assholes who give my country a bad rep.

Yep, it would appear that their current Marketing Manager "Jessica" spent a stint working in ROK for a startup.

He's been identified elsewhere in the thread through the company's new name, so I would assume so.

Choi, Park, Kim are all common Korean last name. Some Chinese also has Choi last name.

Depending on if Choi is a Korean last name.

Choi is a common Korean surname (4th or 5th most common, IIRC).

it's also not an uncommon chinese surname. it's pronounced "cai" in chinese.