The list of current Longhorn maintainers:

Name, <Email>, @GitHubHandle
Sheng Yang, <sheng@yasker.org>, @yasker
Shuo Wu, <shuo.wu@suse.com>, @shuo-wu
Joshua Moody, <joshua.moody@suse.com>, @joshimoo
David Ko, <dko@suse.com>, @innobead