[FabHK]

Indeed. Embraer (Brazil) does jetliners carrying up to around 150 pax. So did Bombardier (Canada), though they sold their C-Series to Airbus (now the Airbus A220). Then there's COMAC (China) and UAC (Russia; also a conglomerate of Sukhoi, Tupolev, etc.).

These compete with the smaller versions of the Airbus A320 family (like the discontinued A318 "Baby Bus") or Boeing B737 family.

So, in that narrow-body and regional jet segment there are a few players.

But in the big wide-body (=2 aisles) long-range jets, there's only Airbus and Boeing.

[N19PEDL2]

Another manufacturer of regional aircraft with a significant market share is ATR, though it makes turboprop airliners, so not exactly the same category as Airbus A220 and Embraer E-Jet.