When I see the under-beard picture it seems the hairs tend to go now to your right side. This is normal for this length and I think it's why it don't show up the real length at the moment. Once it gets a little bit longer gravity will make it hang. Sometimes a beard looks like it's not growing, and a month later it shows the hidden length.
Be patient, your beard is much better than you think it is. Bear in mind that not every part of the beard is growing at the same pace. Apart from the good coverage and density you have, this will determine your own specific shape.