Binned SMP light curves of the three candidate objects. As no bins ≥5σ are recovered in SN 2018grt, it is not shown here. Both SN 2019ldf and SN 2020tfc do however still have robust detections in some bands. The best fitting alternate transients, shown in dotted lines, are the same as in Fig. 11. The i-band of SN 2020tfc is not shown as the background was not subtracted completely, resulting in a significant flux offset.