pattern - What is a Mostly Ruddy Word™?

_{This is in the spirit of the What is a Word/Phrase™ series started by JLee with a special brand of Phrase™ and Word™ puzzles.}

If a word conforms to a special rule, I call it a Mostly Ruddy Word™.

Use the following examples below to find the rule.

And, if you want to analyze, here is a CSV version:

Mostly Ruddy Words™,Not Mostly Ruddy Words™
NAMETAG,IDENTIFICATION
RAILWAY,TRACK
WHIMPER,BLUBBER
WATERJET,AIRJET
MONOLOGUE,SPEECH
INDULGE,ENTERTAIN
ZOOLOGY,MEDICINE

ALLERGEN,IRRITANT
SCALLOPS,CRAWFISH
CLOUDSCAPE,SCENERY
SOLILOQUY,DISCOURSE
BOOKKEEPER,LIBRARIAN
HALLELUJAH,ALLELUIA
STYLOGRAPHY,ELABORATENESS

Addition 1:

I have added two footnotes to the image. The words are in the order they're in on purpose although there's no direct correlation between one word and the next. The words at the bottom are more mostly than those at the top with the exception of the last word, which is more ruddy.

Addition 2:

You may think I made a typo or left out a word in Addition 1, but I assure you that is not the case. Here's a new idea: none of the words in the table above are ruddy as they currently appear. They are all extremely mostly, though. With a quick transformation, they all become mostly ruddy except for HALLELUJAH (which is too mostly) and STYLOGRAPHY (which is too ruddy).

Answer

The simple transformation is

to write the words in lowercase.

Then a mostly word is

a word that has a letter that ascends above the midline (dots do not count).

and a ruddy word is

a word that has a letter that descends below the baseline.

and a mostly ruddy word is

a word that has an ascending letter before a descending letter (i.e. is mostly before it is ruddy).

I think mostly ruddy refers to

the idea that if the word were a boat then the ascending letter could be a mast (most) and the descending letter could be a rudder (ruddy), so naturally the mast should come before the rudder.