Yes. What you want is a deflicker workflow rather than metadata-based exposure matching.

Lightroom’s Match Total Exposures can help in some cases, especially with RAW files, but it may not work when every frame has the same manual exposure settings and the variation comes from flash output.

A dedicated deflicker tool is a better fit. One reported working solution is simple-deflicker, which is designed to normalize frame-to-frame brightness variations in image sequences.

Another possible approach is image-based normalization: measure a consistent bright reference area in each frame and scale each image to match the brightest/reference frame. If you plan ahead, including fixed white (and optionally black) reference areas in the frame makes this easier and more reliable.

So the practical answer is: use a deflicker tool that analyzes image content, not EXIF settings. For future shoots, adding a calibration patch in the scene can improve automatic correction.