I hadn't seen this until now, but FHWA announced the Round 6 EV corridor designations. This is important because corridor designation is part of the process for states to get federal funds (including those from the bipartisan infrastructure law's NEVI program). The "ready" corridors already meet...
I sent a feature suggestion to Plugshare to add the RAN and Rivian Waypoints as "networks" that can be filtered like they have for EA, EVGo, Tesla Superchargers and Tesla Destination chargers, among others. Here's their, IMO, disappointing response:
The link below is to a Google Map that I have created with 3 layers. It is pretty raw right now, so I'll put all the information about it first. The link should stay good even as I try to polish things up over time.
I also can't promise that it will always be up to date. If Rivian changes...