Double 3/4 bath venting double-check

[Stereo]

I am remodeling to create two new back-to-back 3/4 baths (though the same-type fixtures are not back to back). I have been unable to grasp horizontal wet vents so I've changed up my layout to incorporate traditional venting. I know my pipe sizes so I haven't listed those, but I would greatly appreciate a check of my venting layout since I do have some vertical wet vents in my plans that I'm not 100% sure about. Please see the attached drawing.

Thank you very much.

 

[Stereo]

Sorry. The pdf isn’t loading. Here’s an image. CHANGE: Rather than a santee where the horizontal branch enters the waste stack, should I use a wye + 1/8 for easier snaking?

 

[Sponsor]

 

[hj]

A good inspector would reject your "left hand" toilet because it is NOT vented due to the right hand one flowing past it, cutting off air flow from the "vent" nearby.

 

[Stereo]

So I need a dry vent to come off the WC drain before it connects to the horizontal Waste branch? Just curious though; isn’t it assumed that some air always exists in the upper portion of the drain line since that’s what makes horizontal wet drains possible?