That's why Mr. Nimoy said he did Spock with British, broad A-vowels, early in Trek. Non-native, and had to learn. I think of Worf more as outsider than Data. Worf is separated from his ppl, though an outsider to em too, poor guy. I guess it's the separation angle, and that he feels himself to be other than humans while surrounded by them. As opposed to clueless, which is how Data comes across.
2. All three reflect a desire to seem rigid in their thinking/behavior. Spock and logic, Worf and Klingon cultural norms and honor, Odo and a Javer-ian sense of law and punishment. Yet all deviate and are not as rigid as they portray themselves. Spock and his friendship with Kirk and even McCoy, Odo letting Quark stay in business etc.
Maybe this is an acknowledgement by writers/showrunners that the outsider takes comfort in finding and playing a role?