Hi! Welcome!
Based on your preference (pink, rambler, thornless (or almost), spring or summer flush with later scattered blooming), I was able to find this one rambler, Thelma, on HelpMeFind (an excellent repository of roses!).
The EU David Austin sells Thelma, and it also has another gorgeous pink ramble called Constance Spry.
I think there is a red rambler called Ramblin' Red. You may want to look it up online.
I suspect you will have better luck checking out the rose nurseries online for ramblers. And, perhaps, widen your search by including rose climbers, for there are some fantastic climbers in red and pink that match your (listed) preference.
