It immediately took me back to the original days of Leon Russell doing it. The strings were a nice addition, but they don't sound like real strings. It's more like the days when people added Mellotrons to give the feel of strings.
I wonder if some really good string samples would do it justice.
Yeah vocals are like candy everyone likes candy but no one likes all candies. What one person loves another may hate and it flat out makes no since. 3 of the 4 you mentioned sing certain songs that I really dig. (sans Paul Williams) .Leon... A song for you, Tightrope, Masquerade. Randy Political Science, I love LA, sail away. Dylan Lay lady lay, Knocking on heavens door...for sure there lots of songs I am not a fan of Bob's voice on but it's Bob and his songs and damn he wrote some good one...Another one a lot people hate on is Neil Young but dang he's good....Russell's vocals can be an acquired taste, a bit like Randy Newman, Bob Dylan, or Paul Williams. They're not great singers but incredible songwriters and musicians.

Randy Newman Leon Russel...somehow is a favorite of my son whose mainly punk rock...but Ive grown to like his stuff and respect him, he's a main staple.
Leon Russel a main player.
That track sounded great imo,....wow, for you to say it was fast and easy? ....I have hours of stuff that makes your fast n easy...sound like Capitol Records. lol
geez.... nice recording, well balanced and clarity. I like the strings alright, nice glue.... vocals well done.....if anything the mic- might have a few plosives-pops, was it up super close? 1:26 crackle like a cable?....
which mic and vocal chain did you use? that's a wide range vocal track, loud, with quiet sections, and middle volume.
I'd be super happy with something at that level of recording and playing skills. nice job!