Some great suggestions. I’d add, for your consideration:
Dr. John H. Watson - We’ll need a doctor, and he’s a stalwart, hard-working one (much as I hate to admit it, Holmes probably wouldn’t be cut out for a situation like this). I presume for purposes of the OP that he’d know 21st-century medicine… although, given the hypothetical, maybe he wouldn’t need to.
James T. Kirk - Resourceful, lucky and definitely has an eye for the ladies. Just watch his kids dominate the gene pool after the first generation.
Montgomery Scott - Can figure out and build anything.
Robinson Crusoe - An expert on making do, and thriving, with limited resources.
Mixtli - Hero of Gary Jennings’s novel Aztec. Brilliant, resourceful, lots of wilderness-survival experience, and a very strong libido.
William Mandella - Hero of Joe Haldeman’s military scifi novel The Forever War. A survivor, very smart, very lucky.
Marygay Mandella - His wife. Ditto on all counts.
Friday - Heinlein’s heroine, from the novel of the same name. Uber-competent and smart.
Eowyn - Someone suggested Arwen earlier, but she’s an Elf, and not eligible according to the OP. Eowyn can take care of herself, is used to living under primitive conditions, and has strong leadership skills.
That juvenile delinquent girl that Bart fell in love with - Anyone who can escape from Juvie Hall during a dance after breaking Bart Simpson’s heart is gonna do just fine after civilization as we know comes to an end.
Sydney Bristow - I don’t watch Alias much, but she seems to be able to get through just about any crisis in style.
Ellen Ripley - Someone had recommended her earlier; I strongly agree.