That’s a tricky question. Unfortunately most databases are outdated, as in the past two years refutations have been found to traditional joseki, and new joseki have surfaced.
I would recommend to start with @mark5000’s compilation of AlphaGo joseki. Other than that, your best bet is probably Youtube and blogs, especially content published in the second half of 2018, where people discuss the evolution that happened in the past two years. You can search this forum for Youtube channels in English, then there are many more in Asian languages.
For the record, my favorite online reference for studying joseki is (was) Sensei’s library