API Popular Domains under 1M

Using the Cloudflare API, I managed to get a link to a list of datasets, using the radar/datasets/download.
The list however contains the 1 million domains.
Is there a way to get a smaller list of domains through the API, instead of using the Radar dashboard https://radar.cloudflare.com/domains?

Something like Cloudflare API v4 Documentation?

From the Domain ranked time series, which is the top 100 domains ranked.

My goal is to get the unranked domains in buckets of 1K, 10K, 100K, and 1M domains.

I can get the 1M domain bucket by using the URL that can be found in the Dataset download URL.
But how can I get the other 3 bucket sizes?

Cloudflare API v4 Documentation exists. It doesn’t given a limit of max domains returned.

Therefore the only way to do that is to download the buckets through the Cloudflare Radar Domain Ranking?