Welcome to the discussion forum, Uyap!
Yes. All Buddhas teach the same Buddha Dhamma.
That includes the Four Noble Truths, Noble Eightfold Path, and Paticca Samuppada.
Our Solar system lasts around 15 billion years; that is 15 thousand million years. During this cycle four Buddhas have already appeared with Buddha Gotama the last and Buddha Kassapa before him. There is one more Buddha appearing before the destruction of this Earth. A given Buddha Sasana of a given Buddha lasts from 5000 to 80,000 years. And Buddha Sasana of two consecutive Buddhas could be separated by millions of years. So, when one Buddha Sasana (teachings of a given Buddha) disappears from the world (among humans), there will be a large time gap before the next.
Therefore, each Buddha discovers Buddha Dhamma on his own. Therefore, it seems to be amazing that they all come up with the same Dhamma. But that is simple to explain. Buddha Dhamma is the ultimate truth about this world. That truth or Dhamma never changes.
Finally, even though there are going to be five Buddhas in this “world cycle” (Maha Kalpa), that is very rare; it is called “Maha Baddha Kalpa“. For example, there were 30 such Maha Kalpas (about 450 billion years!) before this Maha Kalpa, where not a single Buddha appeared.
This is why we should try to make as much progress as possible within our lifetimes.
P.S. To complete this account, Buddha Dhamma (Four Noble Truths, Noble Eightfold Path, and Paticca Samuppada, etc) is ALWAYS valid regardless of whether those teachings are known to the humans or not. They are laws of Nature. The Buddhas just discover those laws — by their own efforts — and teach them.
