Great list! Here goes with mine.

The EF 24-70m f2.8 ii adapted to the R5 is so versatile, it takes the top spot.

For me, the EF 16-35 f4 comes next.

I am completely with you on the EF 50mm 1.4 as well. I realize there are 50mm lenses that are sharper. That is great for a model with flawless skin and professional makeup. For real people like family and friends, a slightly softer look is better.

With the IBIS of the R5, and plenty of pixels at 1.6X crop, I have fun with my venerable EF 400mm f5.6. Your shots with the 500mm f4 are beauties, but I would need to bulk up the arms to get much use of the 500.

For 5th place I would choose my EF 70-200 f4 mark ii. (Well, the RF version sounds even better, but not yet worth the cost of upgrade.). For a time I also owned the f2.8 mark ii version. Lovely lens, but I was always deciding the f4 would be “good enough “ and so much easier to fit in a bag.

Would love to hear choices of other forum members.