I love stepped keys and wish I could get more of them. I have 3 pairs of stepped "Alt" keys for my IBMs but only 1 pair of stepped "Control"s. Also love my stepped "Tab". Non-stepped keys are what suck, and so they are a good match for sucky modern keyboards.
You’re joking right?
Anyway, I think those “hat-shaped” keys basically originated with the IBM XT. Basically, they were too cheap/lazy to figure out how to add stabilizers on any key except the spacebar, and so they made sure the pressable area of each key was only 1x1 units in size. Before that various keycaps on other keyboards had slight steps, like the shift keys and bottom row keys on beam spring boards, but nothing quite like the XT’s stepped keys.
Everyone ridiculed IBM for the stupid hat keycaps, and there was even a company selling little inserts to “fix” the hat caps. See
https://geekhack.org/index.php?topic=65096.0
With the AT, they fixed it on the tab, shift, enter, zero, and plus keys, by expanding the key tops and adding stabilizers to some keys. I have no idea why they continued to using the hat shaped keys for caps lock and alt, or introduced the stepped ctrl key. IBM did all kinds of weird ****, and it’s not our place to question all their crazy decisions.
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More generally, everything about the standard keyboard layout is broken and stupid, but putting caps lock to the left of the A key has to be one of the worst ever keyboard layout decisions. Caps lock is a terrible key and shouldn’t be on the keyboard at all. To give it such prime real estate is a crime.