Here is something that may help you given your inexperience building end grain cutting board. Pay particular attention to the statements about grain orientation. If you don't get that right, you can expect long-term problems with your board.
There is a little engineering that needs to be considered when building an end grain butcher block or cutting board. First, choose wood where the growth rings (viewed from the end) run as close to 90 degrees or parallel to one edge. Remember, the expansion/contraction is about double along the annular rings verses perpendicular to the rings. You've got to keep the grain running in the same direction as you glue up your strips. In other words, don't glue a flatsawn edge to a quartersawn edge.
Next, the way butcher blocks are made is to glue up strips of wood like you were making a laminated type cutting board. These laminated panels are then run through a planer to flatten them and bring them to equal thickness. Then the panel is crosscut into strips of blocks equal to the thickness that you want the butcher block to be. These block strips are then glued together again keeping the grain running in the same directions.
Not paying attention to the grain orientation will lead to the block cracking and/or joints being pulled apart.
A ANSI type II or ANSI Type I (Titebond III) adhesive will work just fine however, you need to be sure you do everything right to get good adhesion. Wood glues are non-toxic when cured. Your glue faces should be flat and freshly cut. It they were cut more than a few days earlier, freshen them up with about three swipes with 320 sandpaper and block to keep the faces flat.
Generally, threaded rod is not used as maple has quite a bit of movement when it's moisture content changes. Threaded rod would restrict this movement and either deform the block or pull the nut/washers into the wood when it expanded leaving the rod performing no function when the wood later shrinks. Proper gluing will keep the block together.
Finally, it always much cheaper, and a lot less aggravating to purchase a butcher block than to make one. The firms that specialize in end grain butcher blocks have specialized equipment to apply the necessary clamping force, plane the initial boards exactly correctly, plane the first glue up and then clamps to make the final block.