There's no such risk so you're not going to get any sensible ideas in response to this question. The goals of the project are history, you already made that clear. There's nothing more that needs to be done.

We all get that academics now exist in some kind of dystopian horror where they can get transitively blamed for the existence of anyone to the right of Lenin, but bear in mind:

1. The people who might try to cancel you are idiots unworthy of your respect, because if they're against this project, they're against the study of history in its entirety.

2. They will scream at you anyway no matter what you do.

3. You used (Swiss) taxpayer funds to develop these models. There is no moral justification for withholding from the public what they worked to pay for.

You already slathered your README with disclaimers even though you didn't even release the model at all, just showed a few examples of what it said - none of which are in any way surprising. That is far more than enough. Just release the models and if anyone complains, politely tell them to go complain to the users.