That isn’t necessarily a bad thing.
The size of the $ESP that Windows creates (only 100 MB) is a potential bottleneck, however, when sharing it between multiple operating systems.
Manjaro creates a 300 MB $ESP by default; something strangely missing from your Manjaro disk.
I dare say, nothing overly useful at this stage. 
When you do eventually decide to start from scratch, this might be useful; note in particular points made about disconnecting unused disks temporarily while installing each OS.
I’ve taken the liberty of assigning the solution mark for you. Naturally, if you disagree with my choice, you can change it.
Regards.