From the overall bunch, probably Katherine Schwarzenegger... she's not experienced in politics, but if her dad is any indication, she'd probably be one of those precious few modern Republicans to exhibit compassion and make fact-based decisions.
Of the experienced politicians, maybe Doug Burgum. From what I've seen, he's one of the few that might have a heart (he called the Republican LGBT policy divisive). Definitely not Huckabee or Reeves; they don't have a moral fiber in their bodies.
With that said, this would be a pretty sad primary lineup. A mix of largely inexperienced people with people whose experience isn't exactly a ringing endorsement.
Some conservative diehards like to claim the Democrats are unfocused, but I suspect the Republicans might be the ones in disarray come 2024. It could be a battle between Trumpists, old guard GOP and maybe even ones trying to drag the party into the 21st century. It might depend on how the 2022 midterms go... if Republicans lose again, they probably won't present a united front in 2024.