I think the major contributor to the current you’re seeing is likely the harmonics, in which case you’ll struggle to make much sense of it when you try to line it up with V.
When the house is roughly in balance (i.e. when no real power is passing through the meter because the inverter output roughly matches the loads) the current you’ll see from your whole-house CT will be a real mess. Effectively the inverter is satisfying the house’s 50Hz needs while leaving the grid to supply all the harmonics.
Here’s a capture of how mine looks when in balance. It’s difficult to catch it in perfect balance because of varying loads and varying clouds, but this was pretty close.
