Maybe others have examined this in more detail than me. I see that there were requests from "the Biden team" during the campaign. Prior to swearing in, the Biden team were not government entities, but private parties.
If requests were made from someone getting a government paycheck, that would be a direct violation of the constitution.
The Biden team prior to the Jan 2020 swearing in, and the DNC are not government entities. While it smells like shit, accusations of collusion to subvert the Constitution is not gonna stick.
I think you have hit closest to what actual legal violations occurred. IMO, being generally pissed off won't take anyone down. People have to be taken out with legal force, one at a time if necessary. The fact that the left skates on technicalities is a consequence of politicians also being lawyers. They write their own backdoors.