Nope. Reps have been in lockstep for decades. Dems are like herding cats, as I said. More recently (maybe the past 15 years or so), they are guilty of a sort of purity test. If you aren't -for example- progressive enough, you're no better than the Rep candidate. We saw that in 2016, and even a bit in 2020. Sanders and Warren supporters in particular engaged in that.

Which makes some sense. Dems have a larger diversity of demographics than Reps. Reps are, mostly, straight white people born in the US. Dems have blacks, whites, latinos, asians, LBGTQ, and pretty much any other group you care to list, mostly US born, but some naturalized. And that diversity creates a lot of different priorities within the party, sometimes in conflict with one another.

Even now, with the move from "classic" republicanism (budget hawks, strong defense, hawkish foreign policy) to populism (where they don't care about any of that anymore), they still fall in line behind anyone with an (R) after their name.