9.5 month old baby- delays

My son (2nd born) is 9.5 months and was just referred to early intervention by his pediatrician. I very much agree with the concerns. He’s NOT: - getting into sitting on his own - crawling - pulling up -responding to his name consistently - taking “turns” with talking - gesturing consistently -“dancing” - looking around when you say, “where is mama? Where is the duck” -copying expressions (other than smiles … he will return smiles) - lifting arms to be pick up (he does “lean in”) -“showing us” his toys He is: - sitting unassisted -eating well - sleeping well - smiling - laughing -babbles on own - dadada, mamama, etc - cries when his loved ones leave - interactive and loves songs/ games like peekaboo - very very very occasionally clapping or doing other gestures -CONSTANTLY “stimming” - wiggling around his arms and legs … happy or neutral - playing with toys … banging objects together, passing objects back and forth -making eye contact My question is …. Does anyone feel that this closely describes their child/ friend/ family member’s kid at this age? If so, how did things turn out? I’m a teacher (special education) and my “gut” (or maybe it’s just anxiety) has be suspecting autism … and yes … even at this young of an age!!