Eheheh :P
I am not so "expert". I will anyway try to make a list, if I forget something maybe Effendi or AndreA himself will surely complete it
Mostly available are all the LG phones. They are quite similar to each other. Currently in shops are: LG U8330, U8180, U8550 and the only 2 with Bluetooth: U8360 and U8380. There is also U880 that is the most beautiful one, it is so nice that it does not look like it is an LG at all :P They are all sold by "3". And there are also U8100, distributed by Wind, and U8210 and U8250, on sale by TIM. All of them are of the "clamshell" form type.
Then we have some SonyEricsson ones: you can still find in shops some old Z1010 and V800 from Vodafone (both clamshell). And maybe it's already available the V600. This one is almost identical to K600 and K608 models. They differ only in the firmware customisation made by service providers. These are "candybar" style.
There are still some Motorola's around. Apart from the A1000 (the only 3G touchscreen smartphone based on UIQ available at the moment) we can find the "clamshells" V1050 from Vodafone, V3X "Razor" from both 3 and vodafone and E1070 by TIM. It should also already be available somewhere the candybar E770V with vodafone.