Applying Camera Profile while importing raw files

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In general, LR doesn't allow you to search the profiles assigned to photos. But if you haven't made any edits to the photos after they've been imported, you could use the smart-collection criterion Has Adjustments Is True to find photos that have had a preset assigned to them by the raw defaults set in Preferences > Presets.

But if you've made edits to the photos, you'll need to use one of the plugins Any Filter, Data Explorer, or Search Replace Transfer  to search the assigned profiles, e.g.

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