The first is labeled "sympathetic trunk ganglion." The sympathetic trunk (or sympathetic chain, as some references call it) is a string of autonomic ganglia lying alongside the spinal cord from the base of the skull to the coccyx (there are two, of course, one on either side). They are connected to the spinal nerves by rami and receive motor fibers of the first ganglion in the motor chain. They contain the somata of the second neurons.
The second type shown in the sketch is a "collateral" ganglion. These are the large ones that usually have their own anatomic names (e.g., the cervicothoracic ganglion). They are located near the organs they serve.
Not shown is the terminal ganglion. These are analogous to the collateral ganglia, but they are usually located within the substance of the organs they serve.
One final special case should be mentioned. The adrenal medulla is
formed from neural crest cells in embryonic life. Consequently, since
it comes from the neural cell rudiments, its cells have some of the
characteristics of neurons. They are secretory, for one thing; more
importantly, the materials they secrete (adrenaline and
noradrenalin) are known to be neurotransmitters, and in keeping with
their neuron-like nature, these cells are capable of responding to a
neuronal signal: