list of e621 tags derived from the public csv files.
Use at your own risk, the biggest list has over 500,000 tags and I don't have a reasonable way to filter them.
1 Tags with at least one image
10 Tags with at least ten images
100 Over 100
1000 Over 1000
10000 Over 10000
100000 Over 100000
Recommend starting with 1000, then adjusting as necessary.
Higher numbers get more generic tags, but are more likely to be generated properly by the ai.