All of them bar Henry and Ronaldo.
How? Vidic belongs in the first group he’s one of the best cbs in PL history captain of one of the more successful sides and PFA Player of the year. Suarez had probably the greatest season in PL history apart from Ronaldo, but you could leave him out due to longevity. There is no way you can leave Salah out of the top tier though, he is literally PL highest scorer, 3 time top scorer in the league, 1 time playmaker of the year, and has top 3-4 Pl seasons of all time in his first season, there is no credible argument where he isn’t in tier 1.
Shearer is the greatest Pl scorer of all time and gets there by default, he has longevity as well.
Tier 1 for me would include: Vidic, Cantona, Keane, Ronaldo, Henry Salah, Rio has the dead certs.
Lampard VVD Rooney Drogba Terry Gerrrard Scholes De Bruyne could all possibly be in tier 1 or 2.
I struggle to know where to put Giggs he really should be tier 1 but he never hit the peaks the names I mentioned in that tier did, but longevity wise he shits on all those players from a distance.