Generic date

Romani second step:

Total Offers = COUNTROWS('Table')

Under Investigation =
CALCULATE(
COUNTROWS('Table'),
'Table'[OfferStatus] = "Under Investigation"
)

Clients Submission to Risk =
CALCULATE(
COUNTROWS('Table'),
'Table'[SUBMISSION_TO_RISK] <> BLANK(),
'Table'[SUBMISSION_DATE_TO_CREDIT] = BLANK(),
'Table'[APPROVAL_DATE] = BLANK(),
'Table'[REJECTION_DATE] = BLANK(),
'Table'[INVESTIGATION_DATE] = BLANK()
)

Clients Submission to Credit =
CALCULATE(
COUNTROWS('Table'),
'Table'[SUBMISSION_DATE_TO_CREDIT] <> BLANK(),
'Table'[APPROVAL_DATE] = BLANK(),
'Table'[REJECTION_DATE] = BLANK(),
'Table'[INVESTIGATION_DATE] = BLANK()
)

Clients Approval =
CALCULATE(
COUNTROWS('Table'),
'Table'[APPROVAL_DATE] <> BLANK()
)

If you want Client name:
Client Names Under Investigation =
CONCATENATEX(
FILTER(
'Table',
'Table'[OfferStatus] = "Under Investigation"
),
'Table'[CUSTOMER_NAME],
", "
)

Client Names Submission to Risk =
CONCATENATEX(
FILTER(
'Table',
'Table'[SUBMISSION_TO_RISK] <> BLANK() &&
'Table'[SUBMISSION_DATE_TO_CREDIT] = BLANK() &&
'Table'[APPROVAL_DATE] = BLANK() &&
'Table'[REJECTION_DATE] = BLANK() &&
'Table'[INVESTIGATION_DATE] = BLANK()
),
'Table'[CUSTOMER_NAME],
", "
)

Client Names Submission to Credit =
CONCATENATEX(
FILTER(
'Table',
'Table'[SUBMISSION_DATE_TO_CREDIT] <> BLANK() &&
'Table'[APPROVAL_DATE] = BLANK() &&
'Table'[REJECTION_DATE] = BLANK() &&
'Table'[INVESTIGATION_DATE] = BLANK()
),
'Table'[CUSTOMER_NAME],
", "
)

Client Names Approval =
CONCATENATEX(
FILTER(
'Table',
'Table'[APPROVAL_DATE] <> BLANK()
),
'Table'[CUSTOMER_NAME],
", "
)

BBF