- You can do this by using the Top Hit aggregation, sorted by timestamp.
Display latest value in a „Metric“ - This one can't really be done in Kibana, they should just be in the same index for you to be able to use them in the same data table.
- I'm going to be biased here and say that Kibana is just as good for metrics. It all depends on what you want to achieve and how your data is structured. By myself I used it to monitor a bunch of smart plugs in my house.