Evolution of plants and chloroplasts?
Modern biology attempts to group organisms by clades, that is, into groups that contain all descendants of a particular organism and no others.  A clade may be associated with characteristics that most or all members of the clade possess, but those characteristics do not define the clade.  Previously it was common to describe biological groups by particular defining characteristics, but that has been largely abandoned because it often does not reflect true relationships.

"Plants" (or Plantae) is a term that can mean several different things, which are outlined in this Wikipedia table.  In short, it might be (approximately) the clade of "land plants", the clade of "green plants", which includes land plants and green algae, or the clade containing those plus the red algae and the glaucophyte algae.  That last clade, also known as the Archaeplastida, is thought to include all descendant species of the initial organism which initially established the symbiosis leading to chloroplasts (although not some organisms that acquired chloroplasts by secondary ingestion of archaeplastida).  It seems like you are most concerned with that third group.

Alectoria sarmentosa (witch's hair lichen) is not a plant by any of these definitions.  It is a lichen, which are symbioses of a fungi with a cyanobacterium or a green algae.  Green algae of course have chloroplasts.

Monotropa uniflora (Indian Pipe) is a member of the heather family and so is a plant by any of the above three definitions.  It does not have chlorophyll; my guess is that it likely has degenerate chloroplasts.

I think a separate question would be appropriate to inquire about the chloroplast remnants of non-photosynthesizing plants like Monotropa uniflora.