"OneSearch" is completely new to me. I know Yahoo has a decent market in Asia, Japan I believe. I'm always surprised to see AOL mentioned in any context outside of history anymore.
The (minority) stake in Yahoo! Japan that was owned by Yahoo is now owned by Altaba. Probably the only connection between Yahoo and Yahoo! Japan is the name, which Yahoo! Japan license from Verison.
source: https://www.reuters.com/article/us-yahoo-m-a-verizon-idUSKCN...