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https://4unitmaths.com/2024-e2-5-papers.zip are the 2024 papers from barker, fort st, killara, north sydney girls and sydney grammar and here are the proof questions
barker: Q11d, 14a, 14b
killara: Q1, 2, 8, 12a, 12b, 13a, 13b, 14a, 16b
north sydney girls: Q9, 11e, 13c, 14c, 16a, 16b
sydney grammar: Q8, 10, 12e, 13d, 14b
notes:
1. barker q12 is missing, but you can guess from the solution what the question was and it wan't a proof question
2. fort st had lots of questions like show blah blah about vectors, complex numbers etc, which are technically proofs but won't be included here because they are in those topics, not the proof topic - but they didn't seem to have proof-topic-specific questions
so now we are up to 469