Blue Origin: “Here’s renders and a papier-mâchė model of what our lander will look like. It’s assembled together in lunar orbit, from an automated cargo ship, our own lander and another Orion.” Note that this isn’t what they won the option b proposal with.

Tell you what: Here's the mockup BO delivered to NASA: https://aviationweek.com/defense-space/space/nasa-evaluate-blue-origin-human-lunar-lander-hands

SpaceX: “Here’s renders of what our lander will look like.

Wow, renders! They even have renders of Starship on Mars, it must be true!

We have a full scale prototype out in Boca and we’re blowing it up to see if our math and simulations are right on how much pressure the tanks can take.

No they don't. Not of HLS, and also not of "Starship as needed for HLS". Musk's latest speech at SpaceX said the IFT-3 version of starship, that is now called "Starship 1", can only lift 40 tons to LEO. And that makes it incapable of doing Artemis, and thus incapable of being HLS. He promised "Starship 2" will lift the promised 100 tons to LEO, but that hasn't flown yet. So they don't even have a full-scale prototype, but they have scale-models that kinda-sort-look-like-it, and one of them even flew half a mission without a single gram of cargo.

It’ll require some modifications, such as larger landing legs and dedicated landing engines.”

Look, there's apparently a major gap in your knowledge. Starship+Superheavy is big cargo truck that can haul a load or cargo into orbit and come back. What NASA paid for is a trailer-RV that will let you camp out in death valley for a couple of months. And what you're saying is "Well, SpaceX has got an empty trailer and something to pull it, which is basically the same thing as a full house-on-wheels, because they look the same from the outside."

I don't know how to explain that a lunar lander is very much not the same thing as a rocket with an empty shell on top. SpaceX has the latter.