The phrase "most sandwiched" can be replaced with several synonyms that convey a similar meaning. For instance, "surrounded" portrays a sense of enclosure and being encircled by something. "Wedged" is another fitting synonym that highlights the idea of being stuck or caught between two opposing forces. Other options include "crammed," "squeezed," "jammed," "pressed," and "packed." All of which share the commonality of portraying a sense of being tightly confined or stuck between two or more entities. These synonyms can come in handy when describing situations where someone or something is tightly constrained from all sides.