Union line men can make decent money.
A lineman is different from an electrician. An electrician normally works on de-energized circuits in homes or businesses (or construction sites). They normally work on regular schedules and are very knowledgeable about electricity. A lineman tends to work on energized high-voltage circuits outdoors in all types of weather conditions and at all hours (especially in the winter, when repairing downed lines). The latter is more of a job for an outdoorsman, and requires more physical stamina, but probably less actual knowledge about electricity. Both occupations can be quite lucrative, but they are not the same thing.
There are also low-voltage electricians, who work on network wiring, fiber installation, alarm systems, and similar.
That said, OP is going about this the wrong way. What are the kid's interests and talents? Start there, and then try to connect those to potential occupations.