I was thinking about this the other day.
These are the multiple names that I remember in my average size primary school across 2 forms in the final year of primary school. My own name is among them
4 Sarah's, 2 Sharons, 2 Nicolas, 2 Zoes, 2 Andreas, 2 Louises, 2 Susans
Other names I remember Victoria, Cheryl, Clare, Jennifer, Michelle, Kerry, Kelly,Melanie, Miranda, Gina, Suzanne, Helen, Tammy
Boys
4 Stevens, 2 Davids, 2 Garys, 2 Kevins
There were also, Alex, Ian, Craig, Neil, Daniel, Peter, Andrew and Clive.
1988 Northwest UK. Struggled to remember the boys but I think I got all the girls.