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I don't know if you have seen it, the page is quite jumbled up, but there is actually a key given you can use to start searching. Trying to figure out you types first, might let you exlude at least a part of the list right off...

Acers in the catelogue are devided into these types.:

type 1a: upright growing shrubs with 5-7 lobed green leaves
type 1b: upright growing shrubs with 5-7 lobed purple leaves
type 1c: upright growing shrubs with 5-7 lobed variegated leaves
type 1d: upright growing shrubs with 5-7 lobed pink or orange/yellow spring leaves
type 2a: upright growing shrubs with 7-lobed green leaves, cut to half the centre of the leaf.
type 2b: upright growing shrubs with 7-lobed purple leaves, cut to half the centre of the leaf
type 2c: upright growing shrubs with 7-lobed variegated leaves, cut to half the centre of the leaf
type 3a: large shrubs with 7-lobed green leaves, deeply divided almost up to the base
type 3b: large shrubs with 7-lobed purple leaves, deeply divided almost up to the base
type 3c: large shrubs with 7-lobed variegated leaves, deeply divided almost up to the base
type 4a: mushroom-shaped shrubs, with deeply divided, fern-like green leaves
type 4b: mushroom-shaped shrubs, with deeply divided, fern-like purple leaves
type 4a: mushroom-shaped shrubs, with deeply divided, fern-like variegated leaves
type 5a: upright growing shrubs with linear green leaves
type 5b: upright growing shrubs with linear purple leaves
type 6a: dwarf forms, green-leaved
type 6b: dwarf forms, purple-leaved or variegated
type 7: aberrant forms, not fitting in the above categories.

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