Some ground rules: Let’s ignore stress, “single letter words” like R and U, whether or not the initialism is common or even in use, and lets not quibble about whether or not someone’s pronunciation of a word is sufficiently common to count (just don’t go full Raymond Luxury-Yacht).
The word seedy is pronounced like the names of the letters C and D put together. What other words are there like that?
No, those are read straight as words. See the examples here. We’re talking combinations of letters that when read by sounding out the letter names sound like a word. CD (seedy), NRG (Energy), YR (Wire … that one’s a stretch).