Thanks for asking, when talking about changes from past editions it can be tough to know how much of those editions that people new or remember unless they ask rather than dismissing it but going into too much detail to cover all that is an endless rabbit hole.
Wizards used to have bonus on top of the feats everyone got at 1,3, 6, 9, 12, 15, 18 like how 5e fighters still have bonus feats. in 5e wizards do not have bonus feats & that makes sense because You can see a very extensive list of those feats
here that looks like it pulls from many of the various 3.5 books. Other classes
could take them
in place of regular feats but wizards got them from bonus feats
plus had the ability to take them regularly like everyone else. If you look at that list, both metamagics & a gigantic portion of the warlock invocations were on it or they were simply left out of the game entirely. It's one thing to say "well those feats aren't in the game anymore", but you still have the fact that 5e wizards don't have bonus feats like 5efighters & the fact that so many of them are still found as either metamagic or warlock invocations in the 5e book
On top of not having wizard bonus feats & having a base core class feature turned into the justification for nearly all of the. Find familiar went from being a wizard/sorcerer/some PrCs class feature to being a spell so every other class could take it with magic adept if that wizard class feature was not on their spell list already.
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By comparison here is the equivalent sorcerer table
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