A clean category system is the difference between "I made fifty clips and now I cannot find anything" and "I am building a library". The setup that scales: one category per content type (funny, big plays, reactions, drama, technical) plus one per recurring theme (subathon week, anniversary stream, charity stream). Colour codes are visual, so you can scan the Clips page and see the distribution of your last month at a glance.
Naming templates handle the repetitive work. Set a template like "{streamer} — {category} — {date} — {index}" and every clip you tag into that category gets a consistent filename when you bulk-rename. The result is a library where every clip filename already says who, what kind, when, and which of the day's entries it is — searchable from your OS even after you download.