Winning governors races is good but it hardly compensates for getting crushed in legislative races and getting blown out in other statewide races. The dems have lost 2 AG offices and a SOS office which collectively mean more than Beshear managing to win.
Denying the republicans a supermajority in the Louisiana house wasn’t some great achievement though, dems got crushed in house races, they lost 7 seats getting wiped out across small town Louisiana, they fact they only lost 7 instead of 9 seats doesn’t make it better. In Mississippi it was also a brutal wipeout, including the primary the dems lost 5 senate seats getting blown out in rural Mississippi, a large remnant of their downballot support which they had relied on in the Deep South basically disappeared.
Governor offices (Even Kentucky's) is worth way way way more than AG and SOS offices.
Other than not having a Veto, Kentucky Gov actually has a lot of executive power in the state.