A long time ago, 2012 ish I knew OLL, PLL, CxLL, ELL among others. K4 stuff and various 2x2 things, maybe upwards of 250+ algorithms at times..
Now, however, I probably only know maybe 6 PLL's (T, Y, J, L, H, Z and the two 3 cycles) and about the same number of OLL's (2 look stuff and that one case which is just fRUR'U'f') How appalling, but then I haven't used CFOP at all in like 9 years? so I don't need to know them.
I do, however, through virtue of being a Roux and K4 user still know full ELL (half of them are the same 3 cycle so are they even counted as algorithms? No) and about half of CxLL (again a lot are the same 3 cycle so, not algorithms) and ofc a crap tonne of last layer edge tricks for big cubes but those are commutators and also just 3 cycles so in reality I probably only know like a dozen algorithms? yikes