J&J says its one-shot Covid vaccine is 72% effective in the U.S.
cnbc.com
cnbc.com
"Based on the result, J&J plans to file for an emergency-use authorization in the U.S. in early February. The drug giant’s top scientist said this month that he expects a clearance in March, and that it would have product ready to ship then."
If that's the case, you'd expect them to come out roughly in order of effectiveness.