Since I've never heard of him, here are some of Mike Johnson's political stances. In favor of:
A nationwide abortion ban.
A nationwide ban on gay marriage.
Heavy restrictions on medical marijuana prescriptions and a ban on recreational marijuana.
Ending military aid to Ukraine.
Gay conversion therapy.
Federal law against gender affirming care for those under 18.
Eliminating funding for immigration and refugee assistance.
Trump's Muslim ban.
A federal version of Florida's "Don't Say Gay" bill.
Prayer in public schools.
Laws making divorce more difficult.
Johnson does not believe in climate change or that Biden legitimately won the 2020 election. He is a young earth creationist believing the Earth was created between 6-10k years ago. He regularly takes his family hunting or to the gun range. He basically checks every box of a christofascist.
The only good thing I can see about him is that Johnson adopted a black 14 year old boy and raised him. Of course he used this adoption as justification for being against reparations and the adopted son can it be found in any public family photos with Johnson. Any speculation that the adopted boy doesn't exist or was Johnson's sexual plaything is completely unfounded.