  We present radio observations (1--40 GHz) for 36 classical novae,
representing data from over five decades compiled from the literature,
telescope archives, and our own programs. Our targets display a striking
diversity in their optical parameters (e.g., spanning optical fading
timescales, t_2 = 1--263 days), and we find a similar diversity in the radio
light curves. Using a brightness temperature analysis, we find that radio
emission from novae is a mixture of thermal and synchrotron emission, with
non-thermal emission observed at earlier times. We identify high brightness
temperature emission (T_B > 5x10^4 K) as an indication of synchrotron emission
in at least 9 (25%) of the novae. We find a class of synchrotron-dominated
novae with mildly evolved companions, exemplified by V5589 Sgr and V392 Per,
that appear to be a bridge between classical novae with dwarf companions and
symbiotic binaries with giant companions. Four of the novae in our sample have
two distinct radio maxima (the first dominated by synchrotron and the later by
thermal emission), and in four cases the early synchrotron peak is temporally
coincident with a dramatic dip in the optical light curve, hinting at a common
site for particle acceleration and dust formation. We publish the light curves
as tables and encourage use of these data by the broader community in
multi-wavelength studies and modeling efforts.
