In terms of smart plugs that work with home assistant, anything that works with the smartlife or Tuya app will work, such as teckin branded plugs like these: https://www.amazon.co.uk/dp/B07D7BH6N8/ref=cm_sw_em_r_mt_dp_MnS.Fb4S3YKJ7?_encoding=UTF8&psc=1
You just need to add the tuya integration to Home assistant.
There are a few devices that you can add to home assistant directly (with tasmota firmware), but I would avoid those if you want to control them when you are away from home, as you cannot access the HEMS while away from home (unless you pay for the cloud subscription)