This might be a controversial take, but I believe Hospital High-Ends should scale to Hood.
Now hear me out.
As has been constantly alluded to, the Hospital High Ends had the issue of not being fully stabilized, a process that took Hood ten hours to do after he was released. While the doctor speculates their strength, it always appears he is more concerned with their effectiveness and stability rather than how physically strong they are. This is compounded with the fact that he states that Woman and the other four Hospital High Ends actually had a form of trial run, as well as that he stated he only needed a half a day more to complete them, when the process for creating High Ends is three months just for implanting quirks. So the Hospital High Ends were VERY close to Hoods level already.
Also, as much as we have debated about it, I think the idea that High Ends are superior to USJ Nomu is a valid one. Not only is it stated that they are superior to all Nomu in actual stats, the example used for them being superior IS the USJ Nomu. Also, the one giving that dialogue is Ujiko himself, not Crust, as shown with how he continues the dialogue, so even he believes High Ends to be abvoe USJ Nomu. So bare minimum, Hood and the Hospital High Ends are superior to USJ Nomu. It doesn't change scaling or anything, but should function as support for full High Ends warranting Low 7-B.
Also, as for characters that scale to it, there would literally only be Mirko and Crust, as they're the only two other than Endeavor shown fighting Hospital High Ends on even terms. Some random Heroes are shown attacking them as well, but in those cases, Aizawa was there and erasing their quirks, other than Woman, who was killed by Endeavor. Ryukyu, despite being present, only restrained an arm from Woman, so her being able to harm Woman to the same degree as Mirko is unknown.
Near High Ends, however, are a different matter, as they only have a statement from Mirio for being possibly comparable to Hood. That's a far more debatable topic, as they were taken down steadily by dozens to hundreds of Heroes working together.