I looked carefully at the pictures and I like the ones by BENOUVILLE “Samuel Anoints Boy David Israel’s King on a Tease of Red Roots” and Barrias. Those two artists show David anointed in the presence of his 8 elder brothers.
A key part of what God did here was to lift David up in the presence of his brothers. It encouraged David and humbled his brothers. Jesse is oddly silent in scripture. He just instructs David to take food to his brothers and the regimental leaders. This led to David defeating Goliath and coming to the attention of Saul.
I favored those for the same reason. The parallel between David and Joseph as the youngest brother rising to power is obvious. The text here, rather than minimizing this element, actually amplifies it: surely him, no; him, no; him? No! And like Joseph, coming events reveal that David also had a circuitous and dangerous route to the top.