Transmission corridors
Conductors and structures out of the cloud, a curve fitted to each span, and vegetation flagged against a clearance distance. The deliverable is usually a drawing and an encroachment list, not a point cloud.
What people bring us
The pipeline is the same for everybody. What differs is which stages matter, which parameters have to be right, and what the deliverable has to look like at the end.
Forest and canopy
Ground under canopy on a slope, then canopy height, cover, strata and per-tree segmentation. The hard part is the ground, and getting it wrong moves every height above it.
Earthworks and sites
Surfaces, contours, sections and volumes, and the difference between two epochs of the same site. The deliverable is a number somebody is paid against.
What they have in common
All three start with the same two questions: is the file sane, and does it know where it is. A cloud with no vertical datum, a unit mismatch or a strip overlap that was never removed produces a plausible-looking deliverable that is wrong by a metre, and finding that out at the end of the job is the expensive way.