AI is not behaving, so ignore lights and the repositioning of them.

You could try something like this in either the small or medium or a swan light as AI chose.

My utility is being done atm (low ceiling) and I’m going for a lower than normal shelf, I would probably go 45cm from the worktop for yours, 50 max. Just bear in mind, depending on whether you want the lights for decoration or light, it may well just light up the shelf. I’d say 20cm deep shelf for decorative items

https://www.corston.com/en-gb/products/richmond-small-wall-light-fluted-glass-bronze?_pos=4&_sid=04af16e98&_ss=r&search_term=Richmond%20small%20wall%20light#tech-specs

Be cautious of using swan neck lights since you only have 15cm between the fitting and the ceiling