By Manishi Raychaudhuri HONG KONG, Oct 19 (Reuters) - As doubts mount over Asia's AI boom, some of the region's strongest returns are building far from the hype. While tech dominates the headlines, old-economy mainstays are also key drivers of the broader market story. Technology accounts for six of Asia's 15 best-performing market sectors in 2026 thus far. But the remaining nine tell a non-tech story anchored in financials, energy, industrials and process industries.