Currently all reusable blocks are labelled as “Reusable block” in the navigator.
Selecting the block, you can see the name in the block inspector and in the block editor toolbar.
If it is technically possible it will be much much better to show the name given to the reusable block in the Cwicly Navigator as the label, instead of just “Reusable block”.
As a follow up, you can simply double-click the block label and rename it each time you add a reusable block, but obviously this is not optimal when using a lot of reusable blocks and seems like unnecessary redundancy given the name already exists for the block.
As a further reason to add this feature - renaming a reusable block via the Cwicly navigator does not persist. When you reload the editor the name reverts to “Reusable block”.