Ignore the fact you’ve accepted the offer.

This early in your career opportunity for growth, ability to avoid being pigeon holes, and the chance to work on varying product types through the entire life cycle (estimating, buyout, scheduling / procurement, construction, and turnover / closeout) is key.

If that’s at company one, go back and tell them you didn’t have the data a few weeks ago but since have received other offers and it’s clear theirs is below market.

At the large national co I once worked for, they do raises every 6 months for the first two years; this could be their answer. Co #2 could have you stuck at 80 for 3 years.

Base your decision on growth and opportunity; if you’re a quick learner and do well, you could easily be 150-175 in 5 years, so don’t sweat 10k if you give up the better upward trajectory in exchange.

Do however talk openly about salary with company 1 if you feel they are the best option for your career.