Thank you, @stephenb !
Just to close up on this:
I was able to get a somewhat decent visualization by following your suggestions for Legends:
- turned off truncation of the text
- increased number of line to 2
- placed the legend at the bottom
Also, when Filebeat is deployed on a GCP VM - the value in the beats_stats.host becomes a GCP VM instance ID - which is much shorter than the actual host name, so it looks better.
All in all - I call it a success 
Thank you!!