It's ok, i can do a person by person rundown from my perspective:
Jeff Sessions - gets a 0% by the Human Rights Campaign on LGBT rights. What he can do: Remove Obama's orders to schools to discriminate against trans students, and do nothing when states like NC pass seriously anti LGBT laws
Ben Carson - compares gay to bestiality, opposed to anti discrimination laws. What he can do: Remove the 2012 decision prohibiting anti-LGBT discrimination in federally funded housing
Betsy DeVos - donates to anti gay groups and favors 'conversion therapy'. What she can do: Similar to the AG, can remove protections for trans kids in schools
Mike Pence - not cabinet but still, picked by Trump to take over as prez should it come to that. As governor, signed a license to discriminate law that drew such backlash, he was forced to amend it. Tragically his opponents were so inept or indifferent, his most hated legislation as governor was not even mentioned
Among other deplorables on his "transition team," Ken Blackwell - says gays can be reformed "just like arsonists"
Steve Bannon - likely white supremacist, head of Breitbart Media, the self proclaimed mouthpiece for "alt right" and has dozens of anti gay headlines. What he can do: advise Trump -
Donald Trump - said in the debate he wants to appoint SCOTUS and federal judges like Scalia, who crafted the minority opinion and voted against every single gay rights case, vowed to sign a federal license to discriminate law that is identical to the one Pence had to do away with
Trump's Antigay Cabinet and LGBTQ Rights | The Huffington Post
Tom Price - voted to add a constitutional amendment specifically to ban gay marriage. What he could do: removal approval for PrEP, the HIV prevention drug, and allow insurance companies to again discriminate against LGBT
James Mattis - wants to reinstate "DADT" to ban LGBT from the military. What he could do: easily rescind the ability of transgender to serve, since it wasn't legislation
Others whose powers i don't fully understand:
Nikki Haley - outspokenly anti gay
Rence Priebus - oversaw the historically anti gay republican platform
I will add Vladimir Putin to this list as a suspected Trump conspirator - as dictator, enacted a 'gay propaganda' law that is enforced brutally
Why do this? I remember in the past you tried to throw in my face as a guilt trip that you supported my rights while i didn't seem to support yours. Well, we hardly need "support" like this