
You generally use those in the same way as you use these, to refer to one of.

Do not use combination forms such as “(s)he” and “s/he.”.Use combination forms such as “he or she” and “she or he” only if you know that these pronouns match the people being described.

Do not use “he” or “she” alone as generic third-person singular pronouns. They/them/theirs (Shea ate their food because they were hungry.) This is a pretty common gender-neutral pronoun and it can be used in the singular.Also use “they” as a generic third-person singular pronoun to refer to a person whose gender is unknown or irrelevant to the context of the usage.Always use a person’s self-identified pronoun, including when a person uses the singular “they” as their pronoun.Although usage of the singular “they” was once discouraged in academic writing, many advocacy groups and publishers have accepted and endorsed it, including Merriam-Webster’s Dictionary. Use of the singular “they” is endorsed as part of APA Style because it is inclusive of all people and helps writers avoid making assumptions about gender. ago Native Speaker (US) Sentence 2 sounds the best. Like these are available now, while others cant be ordered yet or something.

'These' sounds like you were pointing at one exact set of speakers. The singular “they” is a generic third-person singular pronoun in English. I feel like in this case 'they' is more general.
