  We complete the analysis of all 2018 sub-prime-field microlensing planets
identified by the KMTNet AnomalyFinder. Among the 9 previously unpublished
events with clear planetary solutions, 6 are clearly planetary
(KMT-2018-BLG-0030, KMT-2018-BLG-0087, KMT-2018-BLG-0247, OGLE-2018-BLG-0298,
KMT-2018-BLG-2602, and OGLE-2018-BLG-1119), while the remaining 3 are ambiguous
in nature. In addition, there are 8 previously published sub-prime field
planets that were selected by the AnomalyFinder algorithm. Together with a
companion paper (Gould et al. 2022) on 2018 prime-field planets, this work lays
the basis for the first statistical analysis of the planet mass-ratio function
based on planets identified in KMTNet data. As expected (Zhu et al. 2014), half
(17/33) of the 2018 planets likely to enter the mass-ratio analysis have
non-caustic-crossing anomalies. However, only 1 of the 5 non-caustic anomalies
with planet-host mass ratio $q<10^{-3}$ was discovered by eye (compared to 7 of
the 12 with $q>10^{-3}$), showing the importance of the semi-automated
AnomalyFinder search.
