Lallana, Keita, OAC all won everything with us with decent contribution.
All good players with sh*t fitness and the team around them lifted them(literally) to win everything.
AOC was powerhouse for us in 17-18 and defined the brute force of our attack. We refined it a little more but I'll cherish his dimension shattering power for those few months.
As for Lallana - his contribution was vastly underrated. I'd say for the first year and a half under Jürgen, he was the guy who got it
from the very start. I think the level he set in those initial months under Jürgen proved to the rest what it needed to succeed. Some matched and surpassed it, others failed miserably.