If Liverpool does go on to win the title, they'll be the fifth different PL champion in eight years: City x3, Chelsea x2, Leicester, Liverpool and Man Utd.. By contrast, in the previous eight years:
Serie A - 1 champion (Juve x8)
Bundesliga - 2 champions (Bayern x7, Dortmund x1)
Premiera Liga - 2 champions (Benfica x5, Porto x3)
Ligue 1 - 3 champions (PSG x6, Monaco x1, Montpellier x1)
La Liga - 3 champions (Barca x5, Real Madrid x2, Atletico x1)
Eredivisie - 3 champions (Ajax x4, PSV x3, Feyenoord x1)
The PL is somehow the least predictable of the major European leagues, and it's not particularly close.