Better than SF Bay Area Chinese/HK/Taiwan food

I often heard Richmond has the best Canto food outside HK. I believe that. We are visiting from SF, and would like to try some places that people would consider to be superior (not limited to canto). I have heard about the food courts at the malls. I'm not sure if I should trust places like Eater. If people need me to narrow it down, I'm looking for dim sum, Cantonese, shanghainese (SJB), but anything else the experts think I should try would be great. Thanks.