Stage 0 [Standard inflections]
-s (on noun or verb), -ed, -ing

Stage 1 [V. frequent affixes, productive (take novel base words), no change to base word (in writing or speech)]
-able, -er, -ish, -less, -ly, -ness, -th, -y,
non-, un-

Stage 2 [Frequent, somewhat productive, often impose change on base word (admIre => admirAtion)]
-al, -ation, -ess, -ful, -ism, -ist, -ity, -ize, -ment, -ous,
in-

Stage 3 [Less frequent, low productivity, rarely imposes change on base word ()]
-age (leakage), -al (arrival), -ally (idiotically), -an (American), -ance (clearance), -ant (consultant), -ary (revolutionary), -atory (confirmatory), -dom (kingdom; officialdom), -eer (black marketeer), -en (wooden), -en (widen), -ence (emergence), -ent (absorbent), -ery (bakery; trickery), -ese (Japanese; officialese), -esque (picturesque), -ette (usherette; roomette), -hood (childhood), -i (Israeli), -ian (phonetician; Johnsonian), -ite (Paisleyite; also chemical meaning), -let (coverlet), -ling (duckling), -ly (leisurely), -most (topmost), -ory (contradictory), -ship (studentship), -ward (homeward), -ways (crossways), -wise (endwise; discussion-wise),

anti- (anti-inflation), ante- (anteroom), arch- (archbishop), bi- (biplane), circum- (circumnavigate), counter- (counter-attack), en- (encage; enslave), ex- (ex-president), fore- (forename), hyper- (hyperactive), inter- (inter-African, interweave), mid- (mid-week), mis- (misfit), neo- (neo-colonialism), post- (post-date), pro- (pro-British), semi- (semi-automatic), sub- (subclassify; subterranean), un- (untie; unburden).

Stage 4
-able, -ee, -ic, -ify, -ion, -ist, -ition, -ive, -th, -y,
pre-, re-

Stage 5
-ar (circular), -ate (compassionate, captivat, electorate), -et (packet, casket), -some (troublesome), -ure (departure, exposure)
ab-, ad-, com-, de-, dis-, ex- (out), in-(in), ob-, per-, pro- (in front of), trans-