Would te consider bands like Lacuna Coil, Evanescence, o Apocalyptica "Symphonic Metal"?

Ehh...Apocolyptica I would, the other two not so much. They are più Gothic, which is generally about atmospheric keyboards than symphonics.

Good question.    Depending on the song. Most of their songs are orchestra metal.

Apocalytica could be classified as symphonic metal because of their Musica style. Lacuna Coil wouldn't count as symphonic metal. They're classified at Gothic metal. Evanescence does have some elements of Gothic metal, but it's actually considered alternative rock.

No. The closest one would probably be Apocalyptica. I Amore Lacuna Coil, and Evanescence is my preferito band, but I can't call them "symphonic metal". I would really just categorize them as "modern rock" o "normal rock". They both right great lyrics like a symphonic metal band, though.

Lacuna Coil and Apocalyptica yes. I Amore Evanescence but I think it's più rock o Gothic metal.

Maybe apocalyptica but not the others.

I don't consider either Lacuna Coil o Evanescence to be Symphonic Metal. Evanescence seems più Modern Alternative Rock while Lacuna Coil seems to have più of a hard rock/metal (alternative) edge to their music. Apocalyptica seems più geared toward symphonic metal. though they maybe più avant garde type of band since they use cellos.