There's additionally 4. Targeting transaction throughput via spam/dust attacks where malicious miners introduce empty blocks or transactions with very small sum

There's additionally 4. Targeting transaction throughput via spam/dust attacks where malicious miners introduce empty blocks or transactions with very small sums to clog up the network/drive up tx fees. To my knowledge, this has been tried against BTC, ETH, NEO, and BCH, where at least the dust attacks against BTC were done to try to force a big-block agenda.