It's nice to know that there are knowledgeable people in this forum. I did some research last night (or should I say - early morning) on DA's roses trying to match my rose bushes.
Bush #1 - my closest guess was 'Sweet Juliet' as sometimes depending on the weather or temperature, the blooms got more a hint of peach/apricot than light pink.
Steve and Zuzu, you guys might be right that it could be Sharifa Asma. Outer petals on the bloom do turn very light to almost white which is a trait of Sharifa Asma.
Bush #2 - I came up with Golden Celebration too.
Bush #3 - the pink one, you guys hit the spot. I posted this over at DG too and a gal there name Sue suggested that it is Mary Rose. I came up with another name. Upon further research on Mary Rose, I do believe it is indeed MR. Solved!
Bush #4 - I believe is Graham Thomas and is totally different than bush #2. It is a much taller rose bush with longer canes. And as what Steve mentioned, got shorter petals than bush #2 and a lot more buds per cluster and several clusters per stem/cane.
Thank you all!