All you need is a shift lever that pulls enough cable. How much "enough" is depends on the derailleur's design: how much it moves per unit of cable movement. Older rds move more per ditto, newer ones less -- so I understand; I very rarely use any rd beyond 8 speed era.
My experience: Dura Ace 7402 rd pulled by Simplex Retrofriction (= small barrel) dt shifters over 11-23 and 12-25 Am Classic 10 sp cassettes: beautiful shifting.
DA 740? -- I think it may be the same 7402, but it might be a 7401 -- pulls across 13-25 10 sp with a Suntour barcon: wonderful; the lever has to move just a wee bit more than 90* to shift from small to big cog.
Close: Microshift road rd pulled across 9 cogs with a Silver 1 BES with movement in both to spare; very good shifting.
Ditto but with reverse-pull LX rd.