Here are visualizations of LN data. We have basic info on nodes and announced channels plotted here.

Sample info/insights that you can get out of it.

1: The top 1% of nodes manage 70% of LN capacity. Okay, or not, depending on how you interpret it. But, if you think it is unhealthy for LN, you'll be happy to know that the top 1% manage only 25% of channels. (pls look at Lorenz curve of Lightning network)

2: ~70% of the channel is smaller than 5M sats, and ~20% is smaller than 500K sats. Pls have a look at 'Distribution of channels by capacity buckets)

3: On average, the bigger the channel size, the higher the fee. (Distribution of channels by fee buckets. Pls hover over the bar chart to read it)

On top of that, pls have a look at the 'node visualization.' On one page, you can see basic info for all the nodes.