Right, let me look at seasons 1991-92, 1996-97 and 1997-98 as they are the ones I remember the best out of your list.
This season up to game 24 (and after the summer signings) I would say that Wilder's first choice line up as he thought pre-season would be
Ramsdale, Baldock, Stevens, Basham, Egan, O'Connell, Berge, Norwood, Fleck, McGoldrick, McBurnie. Only Ramsdale, Basham, Norwood and McGoldrick didnt have injuries that sidelined them for a month at least (it looks like Egan will be out for a long time)
1991-92. Bassett always liked to have a big squad with options and he is a "horses for courses" type of manager when it comes to selecting the line ups. Wilder prefers a smaller squad and having the same players playing the same system for years.
Let's look at Bassett's preferred line up for the first 26 league games of the season (as we played 42 games that season so I have added two to the 24 games when comparing injuries for the 1991-92 and for this seasons). Not an easy task because it is complicated by the departures of Booker, Jones, Agana and Wood with Gayle and Gage coming in Sept, Oct and Nov
Tracey, Pemberton, Cowan, Gannon, Gayle, Beesley, Bryson, Hoyland, Agana, Deane, Whitehouse. Based on the highest number of appearances for the first 26 league matches, this was our "usual" line up. Only Tracey, Cowan, Hoyland and Deane had injuries/illness which sidelined them for at least a month. Who else? Am quite sure Gage was preferred to Pemberton soon after he signed (dont remember if Pembo was injured at the time?).
With 14 games to go this season we had more injuries than we had after 26 games in 1991-92.
Based on appearances for the first 28 league games of the 1996/97 season our "usual" line up was Kelly, Short, Sandford, Hutchison, Vonk, Holdsworth (signed in October), White, Patterson, Taylor, Walker, Whitehouse. Only Short, Vonk and Whitehouse had injuries that sidelined them for at least a month. Who else?
Based on appearances for the first 28 league games of the 1997/98 season our "usual" line up was Tracey, Borbokis, Quinn, McGrath, Tiler (left us in November), Holdsworth, Patterson (left us in December), Marker, Fjortoft, Deane, Whitehouse. Tracey was dropped for Kelly in December, McGrath and Whitehouse had career ending injuries (so we can count them two) so there was only Borbokis who was injured for more than a month to make it three.
I have a feeling that you have been just looking at the number of players we had used during the seasons in your list and used guesswork in thinking we had more injuries in these seasons than this season (remember we have 14 league games left and we probably will have further injuries). I have done the hard work on researching for injuries during the 1991-92, 1996-97 and 1997-98 seasons and I am confident that the injury list this season has been worse so I am not going to do the research on the other seasons you have listed. You do it if you want to prove me wrong!
In the 1996-97 and 1997-98 seasons we had more spending power than most of the clubs in the same division. We cannot say the same about this season and I wonder how many clubs in the PL have relegation clauses in the players' contracts (which is why it is harder for Wilder to bring in the players he wanted)