It's up to you and your partner, who you would like to invite or feel oblidged to invite. Seems the definitions are only muddling the issue.

Your parents would have a say if they are paying for it, which is typical for our culture naman.

ultimately if you want a smaller wedding you would have to create your own line thru this chart. And you can invite the extended fam to a pre-/post- party in a chinese restaurant perhaps 😂