How can I display all other devices (that are not measured separately) to see their consumption in total or difference?

Hello,
I’ve been using HA for about 4 weeks now and have already collected some data.
I measure what are likely to be the largest consumers via a socket(Shelly/FritzDECT).
I also read my electricity meter (from year 2011) but only get the current total.
How can I display all other devices (that are not measured separately) to see their consumption?

regards md4711