Dark Spots and Patches on Phalaenopsis Leaves: Disease or Something Else?

[fegh6]

Hi! Everyone,
I have two Phalaenopsis that I suspect might have leaf diseases, and I was hoping you could help me identify and treat them.
The one with the mottled leaves has a long dark line and many small dark spots. The other one has brown patches on its leaves. I've attached pictures of both plants for your reference.
Could you please take a look and let me know what you think? Any advice on how to treat these issues would be greatly appreciated.
Thank you so much for your help!

[Waterdog111]

Looks like scale!

[Dimples]

Doesn’t look like anything out of the norm to me.

[AnonYMouse]

First picture looks like mechanical damage. The rest look fine. Some phals have inherited speckled leaves (schilleriana, lindenii). High light will change leaf colors on the edges (frequently to magenta tones).