I've got 21,195 Cubs cards from 316 different brands listed on a spreadsheet. A random number generator picked five cards, one each from the past several decades.
1900s - 1970s: 1954 Bowman #29 Johnny Klippstein Can you imagine a set today that has just the player's signature with no other graphics? You'd have no way of knowing his name!
1980s: 1984 Donruss #266 Dickie Noles An unflattering picture matched his unflattering 1984 season. Noles was 2-2 with an ERA of 5.15 when the Cubs traded him to the Rangers in early July. In Texas he posted a 2-3 record with the same 5.15 ERA.
1990s: 1996 Bowman #274 Bobby Morris Bad design here - his name is almost unreadable with the dark uniform in the background. Injuries derailed his career and Morris never rose above AA.