Welcome to the forum! Yes, almost all the airliners that are currently in production have the same configuration (as far as I understand, that is what you mean, so I'm not trying to explain you they are not the same
...). Actually, everything bigger than 717 is either 737/320/204/757/767/330/777 or 340/96/747/380. Less types and much less manufacturers than in, say, 60-s, and no more big props! Remember,
Viscount, Il18, Vanguard, L188, Britannia, Tu114
Then, in 70-s, when many of those were still in service, plus
But I hope to see something really NEW in the skies again...