Nope, when you poll on individual policies, they're way to the left of the democrats.
The democrats showcase healthcare bill wasn't "subsidies for employer-based health insurance, that you have no idea what it's going to cost and have to buy at a specific time of year by going to one of 50 sites provided by your state at a specific time of year and filling out a bunch of forms or face a tax penalty, with a sliding scale based on income, marriage status, and other factors" because that's more popular than "free healthcare".
Same if you ask americans about Biden (and Harris's) policies of "loan forgiveness for PELL grant recipients up to X dollars depending on age, loan repayment status, income, parent's income, and whether you were born on a prime-numbered date" vs "free college"
The democrats compromise their bills, not because there's a bunch of "moderates" who are exactly between democrat and republican who will vote for democrats if they promote garbage versions of progressive bills that don't actually help anyone, but because they know those versions are less likely to pass and be easier to chip away at, and therefore won't piss off their billionaire patrons.
There's some very weird ml groups, but you just made that up, if not, you'd have said which org.