I used the players' first available Topps card from when they first made an appearance in the opening day lineup. I then used that same card each additional time they cracked the lineup so it would be easy to see the changes.
The top row of the tile is the 1970 opening day lineup. Each year following is on the next row. The players are shown by position, 1st base - 3rd base, catcher, left, center, and right fielder, and pitcher.
Here's what I ended up with:
You can see some relative consistency early on with the '69 team, and then as they were jettisoned, several changes came each year.
Shortstop and third base have the fewest changes, with three players, while first base saw the most changes, with seven different players. Jose Cardenal and Don Kessinger tied for making the most appearances, six each.
The two biggest surprises for me were the 1971 starting centerfielder, Jose Ortiz, and the 1974 first baseman, Billy Williams.