Tone Equalizer: lifting shadows from -15 EV

You can see how each mode shifts the color channels by looking at the histogram and cycling them. I find that setting it to no produces less shift and thus less impact on those extreme highlight areas that seem to get exaggerated as one or more channels can be weak or clipped.

You can also reduce filmic contrast to say 1 and use almost a linear filmic curve or at least shift the latitude section towards the shadows and you might squeeze a bit more out of the highlights