There are lots of strange ones. V5588 Sgr a couple of years ago had a series of amazing BIG spikes in brightness, short lived, well spaced out and very unlike the variations in V1369 Cen. The AAVSO database doesn't show it too well as coverage at the critical times was lacking, but this adaptation of their light curve shows what it was like. There was some pro monitoring of some of these spikes, particularly from Japan - those obs aren't in the AAVSO database but complement the lines I've drawn in.
Cheers -
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