Mainoldo
The 1980s had similarities and differences to now - it was pre the days of huge money, e.g. Bryan Robson cost £1.5m in 1981, but the wealthier clubs would make regular appearances in the top 6, as shown by the table below - with others competing, but not sustaining. The league would be tight some years and a procession in others and you'd get the odd unusual appearance, like Swansea in 1982 and Wimbledon in 1986. Don't forget Leicester winning the EPL a few years back, it can always spring a surprise.
But mainly, Liverpool, Man Utd, Everton, Spurs and Arsenal would be there and thereabouts. Also, United was a far 'larger' club than Everton, so the expectations have always been higher - the 80s was a good time for Everton, they punched above their weight in that period.
The First Division, now Premier League has usually been a competitive place.
Data below for the season ending
1980 (42 games) - 1 Liverpool 60 points, 2 Man Utd 58, 3 Ipswich 53, 4 Arsenal 53, 5 Notts Forest 48, 6 Wolves 47
1981 (42 games) - 1 Villa 60, 2 Ipswich 56 , 3 Arsenal 53, 4 WBA 52, 5 Liverpool 51, 6 Southampton 50
1982 (42 games) - 1 Liverpool 87, 2 Ipswich 83, 3 Man Utd 78, 4 Spurs 71, 5 Arsenal 71, 6 Swansea 69
1983 (42 games) - 1 Liverpool 82, 2 Watford 71, 3 Man Utd 70, 4 Spurs 69, 5 Notts Forest 69, 6 Villa 68
1984 (42 games) - 1 Everton 90, 2 Liverpool, 3 Spurs 77, 4 Man Utd 76, 5 Southampton 68, 6 Chelsea 66
1985 (42 games) - 1 Liverpool 88, 2 Everton 86, 3 West Ham 84, 4 Man Utd 76, 5 Sheff Weds 73, 6 Chelsea 71
1986 (42 games) - 1 Everton 86, 2 Liverpool 77, 4 Arsenal 70, 5 Norwich 68, 6 Wimbledon 66
1987 (40 games) - 1 Liverpool 90, 2 Man Utd 81, 3 Everton 70, QPR 67, 6 Arsenal 66
1988 (38 games) - 1 Arsenal 76, 2 Liverpool 76, 3 Notts Forest 64, 4 Norwich 62, 5 Derby 58, 6 Spurs 57
1989 (38 games) - 1 LIverpool 79, 2 Villa 70 , 3 Spurs 63, 4 Arsenal 62, 5 Chelsea 60, 6 Everton 59