Your plants look fine.

Though the first one pictured appears to be developing suckers.

Let them get a little bigger, then carefully pluck them.

They looks so crowded in the middle. I guess if I pluck off the suckers they'll have more room.

The brownish tint can be caused by a bright summer sun. Not a problem. It is permanent on these leaves - but it is not harmful. It means that you have too much light around midday - and the plant tries to protect itself.

The top AV has some damage to the center of growth - that's why the side buds started developing new shoots - suckers - as Aegis pointed. Leave one - and remove the rest as soon as you can see which is the strongest and has the better chance to take over. The death of a center bud can be cause by stress - like if it went too dry once - or sometimes just happens.