Dwelt, Made all, Shaken up, Ridden (seems obvious) Ridden and progress, Widest draw, Midfield, Driven.
When I read the commentaries it is far from obvious what they mean!
Answer: Many of these comments have similar meanings:
Dwelt: means a horse is allowed to race at its own pace and no attempt is made to better its position or hold back
Made All: means a horse went straight into the lead and remained there until winning the race
Shaken up: means a horse is encouraged to increase its effort with a shake of the reins and or use of the the jockeys heels
Ridden: is similar to shaken up but suggests that the encouragement is continuous
Ridden and progress: suggests that the encouragement results in the horse improving its position
Widest draw: Applies to flat races where stalls are used to start the race. The widest draw is the stall furthest from the inside rail. This is often a disadvantage on turning tracks especially tight tracks such as found at Chester racecourse
Midfield: Means a horse is racing midway between the front and back of a field of horses
Driven: is a term used near the end of a race when a jockey's urging is most insistent often using the whip for maximum response