I don't use a wiki but instead use Bear (https://bear.app) which gives cross-referential tags and a slick sorted tree of tags. I tag every article ('note') with a set of tags at the top.

#d/2020/05/08 #fam/sis #fam/gifts — notes around a conversation I had with my sister today about potential gifts .

#d/2020/05/05 #recipes/dinner #recipes/c/italian — notes a ravioli recipe I made on 5/5. If I later make it for a group dinner, I'll tag it, too, so I can track when I made things for who and collect longitudinal feedback and recipe changes.

#todo/today is things that need to get done today; things that don't will get moved to other notes.

In case you want to generate a graph of your notes (via graphviz for now), I wrote a project recently (I'm working on a D3 version of the graph "at the moment" although it won't happen until at least tomorrow, today is off-programming day): https://github.com/rberenguel/bear-note-graph

edit: parse error, unbalanced parentheses

Use mind maps. Its quick (much quicker than a wiki) and makes it really easy to reorganise a mess. Freemind/freeplane is good.