How many types can predicative adjectives generally fall into?

How many types can predicative adjectives generally fall into?

Predicative adjectives generally fall into three types: (1) adjectives with postmodifiers; (2) adjectives with the prefix of a- (afloat, afraid, aghast，akin, alert, alight, alike, alive, alone, aloof, amiss, asleep, ashamed, averse, awake, aware, awash, etc.); (3) some adjectives that denote health conditions (faint, ill, poorly, well, unwell, etc.).