The alternative many teams actually choose isn't another visa — it's leaving the person abroad. Sometimes right. Here's when it's wrong.
Well-contained workstreams, mature handoffs, cost-priority roles: remote-abroad works and nothing on this page argues otherwise.
When one of those bites, the O-1 brings the specific person you already trust onshore — without your company filing anything. The record they built (often partly on your own projects) supports the case; your part is one page; premium processing decides in 15 days. You keep the person, gain the time zone, and never run a sponsorship process.