They are both beautiful. Kitty looks like a Himy to me, Tina...a silver (lynx?) persian? Beautiful markings, no matter what.
For tangles and snarls on their bottoms, if they won't let me brush them out, I shave them a potty-patch. I really only have to do this with Squirrely-Jo. Shadow needs some help every now/again, but I can usually brush hers out before they become snarled. Her problem tends to be 'cling-ons' from the pottybox. I have more trouble with snarls behind elbows than I do on their bottoms. ...except for S-Jo, of course, who is too big to properly clean her hind end so shaving helps her considerably.