Out of curiosity, how far back do you go? Like in hockey if you were to make a team of stars, I'd hesitate to put anyone in who had their peak before the mid-90s outside of Lemieux, Messier, and Greztzky, possibly Bourque. I wouldn't even have Orr in there despite him being one of the all-time greats.
I'm guessing you could go back a bit further here or no? I don't think the Prem got flooded with international players all that much till at least the mid-90s either right?
According to the op, you include anyone you've watched in your time.
In terms of going back through different eras, the thing to recall where football is concerned is the checks and balances from different eras. Rules regarding tackling, offside and backpasses have all been altered since 1992 to benefit attackers with the express intention of more goals being scored. The quality of pitches have improved too, and footballs have been designed with the goal of moving through the air more.
All these considerations need to be played off against developments in coaching, preparation, speed, strength etc.
As for the English top flight, foreign players really began arriving in larger numbers in the late 90s. If memory serves, freedom of movement to work anywhere in the EU was enshrined in 1992, but the floodgates really opened up in 1996. That summer European Championships had showcased the transformation of English football's infrastructure and culture, and at the same time the Bosman ruling had ushered in what was tantamount to genuine free agency, making it easier for English clubs to acquire foreign talent for cheaper than home grown players.