A practical path is to avoid auto-corrected negative conversions and work from linear scan data instead. With color negatives, the biggest issue is that inversion and orange-mask removal are not simple, fixed corrections, so many programs make per-image decisions.

From the answers provided, a better repeatable workflow is:

• scan as linear TIFF (not an auto-corrected negative conversion)
• use software designed to interpret linear negative data, such as ColorPerfect
• select the closest film type as a starting point, then make any final adjustments yourself

This should give you a more consistent baseline for comparing exposures than letting scanner software automatically optimize every frame.

As for ICC profiles: custom workflows for creating ICC profiles for color negatives do exist, and one community answer points to an open-source project for that. However, negative film profiling is less straightforward than standard reflective/transparency ICC profiling, which is likely why downloadable film-type profiles are not common.

Done carefully, profiling or linear conversion should not erase the “film look”; it mainly gives you a more controlled starting point. The scans may look flatter at first, but that is often desirable if your goal is consistency and accurate comparison rather than automatic pleasing color.