The second question will be whether or not you want Power over Ethernet (PoE) or not. This depends on what sort of devices you are going to connect and how much PoE budget they will need.
The Waveshare ESP32-P4-Nano is a tiny, inexpensive, low-power development board powered by a dual-core RISC-V processor. Available now from Waveshare or AliExpress for around $19 and up, the little ...