1 looks like a pear, 2 a ornamental cherry you might have to wait to next years flowering to be sure what kind, 3 I don't know.

Number one was supposed to be a lilac....that's what I thought. Planted.....number three I thought was a quince, but it does not flower like one, small white flowers and then those berries. Number two was the one I thought was a cherry

1. Looks like a lilac to me..Don't pears have alternate leaves? these look opposite (like lilac) to me.

At a glance number 1 did look like a pear to me, but it does have opposite leaves so lilac is probably what it is. Number 2 I agree is some sort of ornamental cherry... does it weep? Kinda looks like a weeping cherry. Number 3 appears to also be a prunus of some sort, but not sure what.

Syringa vulgaris

Prunus, maybe P. avium - did not think of it being a decorative one such as P. x yedoensis

Looks like a Pyrus but do not know one with such narrow leaves

Double posting. Same answers were given on Name That Plant where the OP gave the info that 1 was planted as a lilac but hadn't flowered. I can't see pic no 2 here but on the other post I don't see anything that looks like a pear. Just two cherries and a lilac.

Here is a link that might be useful: Other post