A bit 50/50 for Klopp?
«PL-proven»
Robertson, VvD, Winjaldum, Oxlade-Chamberlain, Shaqiri, Mane and Jota.
From outside of the PL:
Thiago, Allison, Matip, Fabinho, Keita, Klavan, Karius and Salah?
Probably signed more players from abroad, but spent similar amount in the PL.
Also worth noting that his signings from the PL has, injury permiting, actually been a success and quite important for his team (jury is out on Jota but looks promising). Ox has been hampered by injuries. Shaqiri has been meh, but was also very cheap so probably what they expected.