New OEM struts are installed. They look the same as the originals, and they say KYB on them. New brackets and bushings were included as expected.
I had one
Strongarm and one Monroe strut, and the former was leaking after 7.5 years, while the latter was not. That combo was never satisfactory, but always held the hatch up after I pushed it all the way up.
The new OEM struts (cold weather version, even though I live in a mild climate I do encounter sub freezing temps) work great! Lift the hatch like they should, and it stays there. Check back in with me 8 years from now to see how they hold up!