Speaking of Jackson Roykirk, how about Nomad?
Don't forget Harry Mudd.
How about using the names of various fictional companies from scifi media such as Weyland-Yutani?Try this page for some more: https://concord.fandom.com/wiki/Fictional_Firms_in_Science_FictionYou could also combine some current companies into interesting conglomerates such as MaerskBoeingSamsung