Thanks for all the feedback!
The original exterior porch had been closed in (so no signs of or reason for a swing) and an additional porch was added with the roof in the photos I posted. There was so much stuff up there, I couldn’t make it out of the opening for the access.
Yep, 3 2x4s per side on the original roof. The roof in question is roughly 25 feet by 18 feet with the 18 feet running along the ridge line.
Roof covering is fairly recent architectural shingles.
Yes, there was Romex run pretty randomly across the space.
Looks like they used 3 2x4s sistered into a “beam” where the old roof meets the new ceiling.